These funfetti marshmallow cereal bars are made with crispy cereal, marshmallows and rainbow sprinkles. Deliciously thick, soft and chewy with a hint of vanilla, they’re a colorful treat for any occasion just like these Frosted Sugar Cookie Bars!

Funfetti Marshmallow Cereal Bars
Over the holidays I had rice crispy treats at a friend’s house. I forgot how tasty and how easy they are to make! Plus, everyone loves them—the whole tray was gone before the end of the night. These bars were especially festive since the cereal was a limited edition red and green for Christmas.
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I thought to myself, how cute would it be to have colorful cereal bars for every occasion? So I decided to make these funfetti marshmallow cereal bars. By adding rainbow sprinkles (or jimmies as they’re also known) the color of the sprinkles can be changed to match the occasion—pastels for Easter, red, white and blue for the 4th of July, etc! I’m a stickler for food that matches the occasion like green Spinach Bread for St. Patrick’s or just colorful food in general, like gorgeous Blueberry Cottage Cheese Smoothies. We eat with our eyes first!
I love rice krispie treats, but using corn Chex cereal instead of puffed rice is my favorite. The cereal has a great crunchy texture and the pockets catch all the gooey marshmallows making them deliciously chewy. You can also use rice, wheat or vanilla Chex, but I love the unique flavor of the corn.
One thing everyone wants to know is how I get my marshmallow bars so soft. The answer is to use plenty of butter, super fresh (not old) marshmallows, and take care to cook the marshmallows until they are just melted. I take them off the heat before they are completely melted. Also, when pressing the cereal into the pan, use a firm touch but don’t pack the bars down or they’ll end up tough. These are my tips for funfetti marshmallow cereal bars that are still soft the next day. Whether they last that long is another story.

You will need:
- 4 tablespoons butter
- 1/2 teaspoon vanilla
- 10 oz bag of marshmallows
- 7 cups corn Chex
- 1/2 cup funfetti sprinkles
Kitchen Tools You May Find Helpful:
- Large spoon or spatula
- Large pot
- 13×9 or 9×9 pan
- Measuring cups and spoons

Typically, cereal treats are made in a 13×9-inch pan, but I like to put them in a square pan for thicker bars. You won’t get quite as many servings, but it makes for perfectly thick and chewy funfetti marshmallow cereal bars.
We hope you enjoy these Funfetti Marshmallow Cereal Bars! Don’t they look so inviting? Don’t forget to check out more chewy and delicious bar recipes like these Chewy Cookie Crunch Bars or these Banana Bars with Vanilla Cream Cheese Frosting!

Funfetti Marshmallow Cereal Bars
IMPORTANT - There are often Frequently Asked Questions within the blog post that you may find helpful. Simply scroll back up to read them!
Print It Pin It Rate ItIngredients
- 4 tablespoons butter
- ½ teaspoon vanilla
- 10 oz bag of marshmallows
- 7 cups corn Chex cereal*
- ½ cup funfetti sprinkles
Before You Begin
Instructions
- Lightly grease a 9x9 or 13x9 pan; set aside.
- In a large pot over low heat, melt the butter. Stir in the vanilla and marshmallows. Continue stirring until marshmallows are just melted. Do not over-cook.
- Remove from heat and add cereal. Stir until almost combined, then add sprinkles. Carefully mix them to distribute, then pour mixture into prepared pan. With buttered wax paper, press cereal into an even layer. Allow to cool before cutting.
Nutrition
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.
Amanda Davis
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Sally Francis Tarsitano says
Really doesn’t need Fubfetti Sprinkles.