Vibrant Rainbow Grilled Cheese: A Fun & Easy Recipe for St. Patrick’s Day & Unicorn Lovers
Who says you shouldn’t play with your food? Embrace the joy of culinary creativity and add a splash of color to your mealtime with this delightful rainbow grilled cheese sandwich! Perfect for celebrating St. Patrick’s Day with a magical twist, or simply to bring a smile to the face of any unicorn enthusiast. This isn’t just a sandwich; it’s an experience, transforming a classic comfort food into a vibrant, edible work of art. Imagine the gasps of delight and wide eyes when you serve up this colorful creation – it’s guaranteed to be a hit with kids and adults alike, making any ordinary lunch extraordinary. This recipe is designed to be as simple as it is visually appealing, offering a playful way to enjoy a comforting favorite with a burst of unexpected color.

Why You’ll Love This Rainbow Grilled Cheese
Whether you have a dedicated unicorn lover in your home, are planning a whimsical party, or are just searching for an incredibly fun and festive lunch idea for St. Patrick’s Day, this rainbow grilled cheese recipe is an absolute must-try. Its vibrant appearance instantly captivates, making it an ideal choice for special occasions that call for something a little different. While you probably wouldn’t make it an everyday staple, preparing this vibrant sandwich once or twice a year transforms a simple meal into an entertaining and memorable snack or lunch. It’s a fantastic way to encourage picky eaters to try something new, offering a playful presentation that appeals directly to their imagination. Moreover, the process of making it is almost as much fun as eating it, involving simple steps that even young aspiring chefs can help with under supervision, fostering a love for cooking and creativity in the kitchen.
Beyond St. Patrick’s Day: Creative Occasions for Rainbow Grilled Cheese
While the vibrant colors of this grilled cheese naturally align with the spirit of St. Patrick’s Day and its iconic rainbows, its appeal extends far beyond a single holiday. Its versatility means it can brighten up countless other events throughout the year. Imagine serving these dazzling sandwiches at a child’s birthday party, where each kid can marvel at the colorful layers, or as a special, unexpected treat during a school holiday to inject some fun into the day. They are also perfect for unicorn-themed gatherings, fairy tale brunches, pride celebrations, or even as a unique and delightful addition to a picnic basket. The beauty of this recipe lies in its ability to spark joy and wonder, turning any meal into a celebration. It’s a simple yet impactful dish that proves food can be both delicious and incredibly fun to look at.
Rainbow Grilled Cheese Recipe: A Fun Culinary Adventure
Get ready to embark on a delightful culinary adventure that promises both flavor and fun! This recipe is straightforward, ensuring that even novice cooks can achieve a stunning result with minimal effort. The magic happens as the heat transforms simple ingredients into a gooey, multicolored delight. And if you’re a fan of colorful and playful dishes, we have more whimsical options you’ll adore. Be sure to check out these eye-catching Rainbow Deviled Eggs for your next appetizer spread, or these charming Rainbow Cookies on a Stick, which serve as perfect companions to your vibrant grilled cheese or delightful standalone treats for any festive occasion.

Ingredients You Will Need for Your Colorful Creation
Crafting these magical sandwiches requires just a few basic ingredients that are readily available at any grocery store. The key to their vibrant appeal lies in the clever application of food coloring, which transforms ordinary cheese into a spectrum of bright, edible hues. Gather these essential items to begin your colorful culinary journey:
- 8 slices of bread: For the best visual effect, choose a light-colored bread such as white bread, brioche, or a light sourdough. These provide a neutral canvas that allows the rainbow colors to truly pop.
- Softened Butter or Margarine (approx. 4 tbsp): This is crucial for achieving that perfectly golden, crispy exterior on your grilled cheese. Softened butter spreads more easily and ensures even coverage.
- 4 slices provolone cheese: Provolone is an excellent choice for the base layer due to its mild flavor and superior melting properties, which help to contain and enhance the colored mozzarella.
- 1 cup mozzarella cheese, shredded: Shredded mozzarella is absolutely crucial for this recipe. Its incredibly stretchy and gooey texture when melted makes the rainbow reveal even more satisfying and fun.
- Food dye: A selection of vibrant food colorings (red, yellow, and blue are the primary colors you’ll need, as they can be mixed to create orange, green, and purple). Gel food coloring is highly recommended for its intense pigmentation, which yields brighter, more distinct colors compared to liquid drops.
Essential Kitchen Tools to Master Your Rainbow Grilled Cheese
To ensure a smooth and enjoyable cooking process, having the right tools on hand is half the battle. These kitchen essentials will help you bring your rainbow grilled cheese to life efficiently and effectively, allowing you to focus on the fun of the creation:
- Frying pan (Large Skillet): A non-stick frying pan or a large cast-iron skillet is ideal for even cooking and easy flipping. Ensure it’s spacious enough to comfortably fit one or two sandwiches at a time without overcrowding, allowing for consistent browning.
- Spatula: A sturdy, wide spatula is necessary for confidently flipping your grilled cheese, ensuring both sides develop that beautiful, golden-brown crust without losing any of the precious melted cheese.
- Cheese grater: If you’re opting for a block of mozzarella instead of pre-shredded, a good quality cheese grater will quickly get the cheese to the perfect consistency for absorbing the food coloring and melting smoothly.
- Food Coloring: Invest in high-quality food coloring, preferably in gel form. This will yield the most vibrant and appealing rainbow hues, making your sandwiches truly pop with color.
- Small Bowls: You will need at least four small, separate bowls to divide and color your shredded mozzarella cheese. This prevents colors from mixing prematurely.
- Small Spoons or Forks: A few small spoons or forks will be indispensable for stirring the food coloring into each bowl of cheese, ensuring thorough and even color distribution.
Expert Tips for Perfect Rainbow Grilled Cheese
Achieving a truly spectacular rainbow grilled cheese involves a few clever tricks and considerations that go beyond the basic instructions. These expert tips will help you create a visually stunning, perfectly melted, and incredibly delicious sandwich every time:
- Custom Color Themes for Any Event: While the classic rainbow is fantastic, don’t limit your creativity! You can easily adapt this recipe to suit various occasions. Try adding just one single vibrant color for a birthday celebration, using team colors for an exciting game day snack, or mixing a delightful palette of princess colors for a themed party – whatever suits the occasion and sparks your imagination. The possibilities for customization are endless.
- Unicorn Magic with Sprinkles: To elevate your rainbow grilled cheese to an enchanting “Unicorn Grilled Cheese,” simply top the finished sandwiches with a sprinkle of colorful edible glitter or rainbow sprinkles immediately after removing them from the pan. The warmth of the cheese will slightly adhere the sprinkles, adding an extra layer of magic and sparkle that kids will absolutely adore.
- The Delight of the “Pull Apart” Reveal: For an interactive and exciting eating experience, try this technique: when assembling the sandwiches, avoid cutting completely through the cheese. By leaving the slices of provolone intact and carefully placing the colored mozzarella on top in distinct lines, you can encourage kids (and even adults!) to slowly pull their sandwiches apart. This delightful action dramatically reveals the fun, melted rainbow colors inside, adding an interactive and memorable element to the meal.
- Ensure Even Color Distribution: When mixing the food dye into the shredded mozzarella, take your time to ensure the color is thoroughly and evenly distributed throughout each batch. This prevents unsightly splotchy patches and guarantees a consistent, vibrant rainbow effect across all your sandwiches.
- Choose Your Bread Wisely: The type of bread you use significantly impacts the final result. Opt for a light-colored, soft bread. White bread or a light-colored sourdough loaf works best as it provides a neutral, bright canvas for the cheese colors to truly pop against. Thicker slices of bread also hold up better to the cheese and butter during cooking, preventing sogginess.
- Patience with Medium Heat: Always cook your grilled cheese over consistent medium heat. This is a crucial step that allows the bread to toast to a beautiful, crisp golden brown while ensuring the cheese inside melts thoroughly and evenly without any risk of burning the bread. Rushing the process with high heat will lead to burnt bread and unmelted cheese.
- Preventing Premature Color Bleed: While a slight blending of colors can be part of the charm, to keep distinct color lines, apply the colored cheese in clear, separate strips on top of the provolone. The provolone layer acts as a gentle barrier, helping to keep the different colors from mixing too much before melting, thus preserving the defined rainbow effect.
Step-by-Step Guide: How to Craft Your Rainbow Grilled Cheese
Follow these simple, detailed instructions to create your own vibrant and delicious rainbow grilled cheese sandwiches. Get ready for a burst of color and flavor!
- Prepare the Bread: Begin by taking each of your 8 slices of bread and generously buttering one side thoroughly. This buttered side is what will come into contact with the hot frying pan, ensuring a beautifully crispy, golden-brown crust. Set these buttered slices aside on a clean surface for a moment while you prepare the cheese.
- Color the Mozzarella: Divide your cup of shredded mozzarella cheese as evenly as possible into four separate small bowls. Now, it’s time to add the magic! Add a couple of drops of your chosen food coloring to each bowl: yellow to one bowl, red to another, bright blue to the third, and finally, a mix of both red and blue drops to the fourth bowl to create a rich purple hue. Using a separate small spoon or fork for each color, stir the food dye into the cheese until each batch is uniformly and vibrantly colored, ensuring no white spots remain.
- Assemble the Base Layers: Take your 4 slices of provolone cheese and carefully cut each slice in half, creating 8 smaller, rectangular pieces. Place one half-slice of provolone onto the unbuttered side of each of your 8 bread slices. This provolone layer serves as an essential foundation for your colorful mozzarella, helping it melt evenly and preventing excessive color bleed into the bread.
- Create the Rainbow Layers: Now, for the artistic part! On four of the bread slices (which already have the provolone half-slice on top), carefully sprinkle about 1-2 tablespoons of each colored mozzarella cheese in distinct “lines” or strips. Arrange the colors in the classic ROYGBIV order: start with red, then a mix of red and yellow to make orange, followed by yellow, then a mix of yellow and blue to make green, and finally blue and purple. Take care to keep the lines as separate as possible to achieve a clear and striking rainbow effect.
- Form the Sandwiches: Take the remaining four slices of bread (which also have a provolone half-slice on their unbuttered side) and gently place them on top of the bread slices with the colored cheese. Ensure the unbuttered side of the top bread slice is facing inwards, completing your four rainbow grilled cheese sandwiches. Press down lightly to ensure everything is compact.
- Cook to Golden Perfection: Place the assembled sandwiches carefully into a preheated frying pan over medium heat. Allow them to cook gently until the bread on the bottom is beautifully golden brown and delightfully crispy, which typically takes about 2 to 3 minutes. Keep a close eye on them to prevent burning.
- Flip and Finish: With your sturdy spatula, carefully flip each sandwich to the other side. Continue to cook until this second side is also golden brown and, crucially, the cheese inside is completely melted, gooey, and ready to be revealed. This will usually take another 2 to 3 minutes. The cheese should be bubbling slightly and the colors vibrant.
- Serve Immediately: Once perfectly cooked, remove the rainbow grilled cheese sandwiches from the pan and transfer them to a plate. Serve them warm and encourage everyone to pull them apart to fully enjoy the spectacular melted, colorful cheese reveal.
- Optional Unicorn Topping: For an extra magical touch, especially if you’re making these for unicorn lovers, immediately after removing the sandwiches from the pan, you can lightly sprinkle colorful edible glitter or rainbow sprinkles over the warm, melty cheese for a true “Unicorn Grilled Cheese” experience!

Serving Suggestions & Pairings for Your Rainbow Grilled Cheese
This vibrant rainbow grilled cheese is undeniably a showstopper on its own, a meal that delights both the eyes and the palate. However, pairing it with complementary sides can elevate the entire meal and provide a wonderful balance of flavors and textures. For a truly classic and comforting lunch, a steaming bowl of creamy tomato soup makes an ideal companion, its rich red hue contrasting beautifully with the playful colors of the sandwich. You could also serve it alongside a fresh, crisp green salad tossed with a light vinaigrette to balance the richness of the melted cheese with refreshing lightness. For a themed party or a special treat, consider small bowls of colorful fruit (like strawberries, blueberries, and melon chunks), a side of crisp veggie sticks with a favorite dip, or even some homemade sweet potato fries. To complete the perfect, cheerful meal, a glass of cold milk or a fun, naturally colored fruit juice would be a fantastic choice.
These rainbow grilled cheese sandwiches have consistently been a huge hit with my kids, and honestly, they’re surprisingly delicious and satisfying too, making them a truly fun and delightful meal for the entire family. The pure joy on their faces as they pull apart the sandwich to reveal the vibrant spectrum of colors inside is absolutely priceless and makes all the effort worthwhile! If you’re looking for other festive and fun grilled cheese ideas to keep the excitement going, you might also love our Festive Grilled Cheese, which features a delightful mix of green and red cheeses, perfect for holiday celebrations. Or perhaps your little ones would prefer this adorable Bear Toast, inspired by the beloved Paddington Bear, offering three different charming ways to make bear-shaped toast that transforms breakfast or snack time into a playful adventure! Whatever creative food idea you choose, turning mealtime into playtime is a fantastic way to create lasting, happy memories with your loved ones.
Happy St. Patrick’s Day and happy cooking! We hope you enjoy this magical and delicious treat!
Rainbow Grilled Cheese
Whether you have a unicorn lover in your house or you’re just looking for a fun lunch on St. Patrick’s Day, this rainbow grilled cheese is for you.
IMPORTANT – There are often Frequently Asked Questions within the blog post that you may find helpful. Simply scroll back up to read them!
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Ingredients
- 8 slices of bread
- 4 tbsp softened butter or margarine
- 4 slices provolone cheese
- 1 cup mozzarella cheese shredded
- Food coloring
Things You’ll Need
- Large skillet
- Spatula
- Cheese grater
- Food coloring
Before You Begin
- You can alternatively add one single color for a birthday, team colors for a game day, or a mix of princess colors – whatever suits the occasion!
- Top with colorful sprinkles to make Unicorn Grilled Cheese!
- Don’t cut completely through the cheese so you can encourage the kids to pull their sandwiches, revealing the fun colors inside.
Instructions
- Butter one side of each slice of bread and set aside.
- Divide the shredded cheese into four bowls and add a couple drops of food coloring: yellow to one, red to one, blue to another, and red and blue to make purple in the 4th. Stir the food dye into the cheese.
- Cut the slices of provolone in half and place one on each slice of bread – on the unbuttered side. Sprinkle 1-2 Tablespoons of the colored cheese in “lines” or strips on top of 4 of those slices, overtop of the provolone, in the order of ROYGBIV (mix the red and yellow to make orange, yellow and blue to make green).
- Sandwich a slice of bread with provolone over the shredded cheese and place in a frying pan over medium heat.
- Cook until golden brown, about 2 minutes, and then flip.
- Remove to a plate and serve.
- Optional: top with colorful sprinkles to make Unicorn Grilled Cheese!
Nutrition
Serving: 1 sandwich | Calories: 434cal | Carbohydrates: 29g | Protein: 19g | Fat: 26g | Saturated Fat: 11g | Cholesterol: 41mg | Sodium: 843mg | Potassium: 161mg | Fiber: 2g | Sugar: 3g | Vitamin A: 935IU | Calcium: 435mg | Iron: 2.2mg
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The recipes on this blog are tested with a conventional gas oven and gas stovetop. It’s important to note that some ovens, especially as they age, can cook and bake inconsistently. Using an inexpensive oven thermometer can assure you that your oven is truly heating to the proper temperature. If you use a toaster oven or countertop oven, please keep in mind that they may not distribute heat the same as a conventional full sized oven and you may need to adjust your cooking/baking times. In the case of recipes made with a pressure cooker, air fryer, slow cooker, or other appliance, a link to the appliances we use is listed within each respective recipe. For baking recipes where measurements are given by weight, please note that results may not be the same if cups are used instead, and we can’t guarantee success with that method.
This post was originally published on this blog on Dec 28, 2016.