Funfetti Rice Krispies Treats

By
Leah Maroney
Leah Maroney
Leah Maroney
A recipe developer and food photographer, Leah Maroney is an ardent home cook and food blogger who has written over 300 recipes for The Spruce Eats.
Learn about The Spruce Eats' Editorial Process
Updated on 05/8/23
Tested by
Noah Velush-Rogers
Noah Velush-Rogers
Tested by Noah Velush-Rogers
Noah Velush-Rogers works on food prep for several area caterers. He has worked with a team of prep chefs for a private school group. He was an assistant cooking teacher for children and teen group cooking classes. Noah was hired as an intern and was then trained as a recipe tester for Fine Cooking Magazine. 
Learn about The Spruce Eats' Editorial Process
funfetti rice krispy treats

The Spruce / Stephanie Goldfiinger

Prep: 5 mins
Cook: 5 mins
Cooling Time: 30 mins
Total: 40 mins
Servings: 12 servings
Yield: 12 bars
Nutrition Facts (per serving)
146 Calories
4g Fat
28g Carbs
1g Protein
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Nutrition Facts
Servings: 12
Amount per serving
Calories 146
% Daily Value*
Total Fat 4g 5%
Saturated Fat 2g 10%
Cholesterol 8mg 3%
Sodium 56mg 2%
Total Carbohydrate 28g 10%
Dietary Fiber 0g 0%
Total Sugars 16g
Protein 1g
Vitamin C 4mg 22%
Calcium 2mg 0%
Iron 2mg 12%
Potassium 11mg 0%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

These Rice Krispies treats with rainbow sprinkles look just like Funfetti cake. They are easy and fun to make and a perfect recipe to introduce young kids to the joy of cooking.

Regular Rice Krispies treats are a go-to dessert or snack, but they are a basic beige to tan and certainly not festive-looking. The addition of rainbow sprinkles for a confetti look makes them much more appealing and they will look great stacked on a plate to serve guests at a children's party. If you are also serving cake or cupcakes made with Pillsbury's Funfetti baking products, they will match the theme.

You can use the brand name Kellogg's Rice Krispies cereal for this recipe, or any generic rice crispy cereal.

How To Make Rice Krispies Treats in the Microwave

Instead of using a stovetop, you can place the butter and marshmallows in a microwave-safe bowl and heat on high for 3 minutes in the microwave, stirring after two minutes until the mixture is smooth. Then proceed to stir in the cereal and sprinkles.

Think Beyond the Square

While square rice krispies treats are standard, you can cut or shape the mixture into all kinds of fun shapes. Let the pan of treats cool slightly. Then spray your favorite cookie cutters with cooking spray and cut the treats into shapes. After cutting as many shapes as you can, press the remaining treat mixture together and again cut more shapes. Repeat this until you have cut as many shapes as possible, then cut the remaining portion into squares.

You can also roll the slightly cooled treat mixture into balls. Then roll the balls into a dish of sprinkles for even more color. Or shape the slightly-cooled treat mixture into round doughnuts. Decorate your shaped treats further with frosting or decorating gel.

“A good variation on a homemade classic. I always advise just making Rice Krispie Treats at home rather than buying them since they have less of a chemical taste and this version's splash of color really brings it together.” —Noah Velush-Rogers

Funfetti Rice Krispies Treats Tester Image
A Note From Our Recipe Tester

Ingredients

  • 1 (10-ounce) bag marshmallows

  • 3 tablespoons unsalted butter

  • 3 cups crispy rice cereal

  • 1/4 cup rainbow sprinkles, plus more for garnish

Steps to Make It

  1. Gather the ingredients.

    Funfetti Rice Krispies Treats ingredients

    The Spruce / Stephanie Goldfinger

  2. Heat the butter in a saucepan over medium heat until melted.

    butter in a saucepan

    The Spruce / Stephanie Goldfinger

  3. Add the marshmallows and cook on low heat until the marshmallows have completely melted, stirring occasionally.

    marshmallow and butter mixture in a saucepan

    The Spruce / Stephanie Goldfinger

  4. Stir in the Rice Krispies. Then stir in the rainbow sprinkles. 

    add sprinkles and rice krispies to the marshmallow mixture in the saucepan

    The Spruce / Stephanie Goldfinger

  5. Spread the mixture into a 9 x 9-inch greased baking dish.

    rice krispie mixture in a baking dish

    The Spruce / Stephanie Goldfinger

  6. Top with additional rainbow sprinkles. Allow the dish to cool so the treats become firm.

    rice krispies mixture in the baking dish topped with sprinkles

    The Spruce / Stephanie Goldfinger

  7. When firm, cut the treats into squares and serve.

    Funfetti Rice Krispies Treats

    The Spruce / Stephanie Goldfinger

How To Store Rice Krispies Treats

  • You can store the treats at room temperature in an airtight container for up to two days. If you are storing them longer, keep them refrigerated in an airtight container for up to two weeks.
  • For even longer storage, place them in layers between sheets of wax paper and freeze. They will be good for up to six weeks when frozen. To serve them after freezing, then warm up at room temperature for 15 minutes.

Recipe Variations

  • As an alternative to regular marshmallows, you can use 4 cups of miniature marshmallows or one 7-ounce jar of marshmallow crème. Heat in the same way you do with regular marshmallows.
  • For a chocolate variation, use chocolate sprinkles instead of rainbow sprinkles. If desired, spread melted chocolate in a thin layer on top.