One bowl, four ingredients and the microwave are all it takes to make Microwave Rice Krispie Treats!

Kids and adults alike love these famous marshmallow cereal sweet treats! And this is the best rice krispie treats recipe ever because it’s super easy to make, for one or for many! Perfect to pop into school box lunches or as a quick pick me up afternoon snack!

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Microwave Rice Krispie Treats


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Easy Rice Krispie Treats

  • Inexpensive, easy-to-make treats that everyone loves! So many variations, too!
  • Fewer calories than most dessert snacks.
  • Why buy store-bought when homemade is so easy and fun to make?
  • Fun for an afterschool treat, shape them into Valentine’s, Halloween, or Christmas molds for festive goodies.

Rice Krispie Treats Ingredients

CEREAL: Rice Krispies are the classic base for this sweet treat, but cocoa Krispies, toasted O’s, Chex, even Lucky Charms are yummy swaps! 

MARSHMALLOWS: Choose mini marshmallows because they’ll melt faster, or cut large marshmallows (approximately 50 each) into smaller pieces. Multi-colored marshmallows are a fun, colorful substitute and will be just as chewy and gooey!

BUTTER: For best results, use real butter to get that rich, buttery sweet flavor. Swirl in some peanut butter with the marshmallows for an even yummier treat!


  • This is the fun part! Mini M&M’s, chocolate chips, toffee pieces, crushed Oreo pieces, even chopped, dried fruit like cherries, apricots, or mangoes can be added to rice Krispie squares!
  • Squeeze a few drops of food coloring into the melted marshmallow mix and create colored squares to celebrate a baby shower, a birthday, or a holiday!
  • Top with melted chocolate for an extra special treat!

close up shot of rice krispie treats on a grey plate

How to Make Rice Krispie Treats in the Microwave

Microwaveable treats are super fun and easy to make:

  1. Place butter and marshmallows in a microwave-safe bowl. Heat (per recipe instructions below).
  2. Once the mixture is melted and smooth, add vanilla & gently stir in the cereal.
  3. Press mixture into a pan and cool before cutting into desired sizes.

PRO TIP: Pour all of the cereal into a colander to shake out the ‘cereal dust’ before mixing into the marshmallow mixture).

Time Savers

  • Chop refrigerated butter into small pieces so it melts faster. 
  • If adding nut butter, microwave the jar for about 30 seconds to make it easier to spoon into the mixture. 
  • To shorten microwave melting time, 1 ½ jars (10 oz) of marshmallow crème (or fluff), can be substituted for the 6 cups of mini marshmallows. 

How to Store Rice Krispie Treats

Rice Krispie treats will maintain their chewy goodness if they are kept in an airtight container in a cool dry place for up to 4 days. For grab-and-go snacks, cut and wrap them individually to pop into a backpack or briefcase!

rice krispie treats on a grey plate

Other Easy Treats To Make!

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Microwave Rice Krispie Treats

The best Rice Krispie treats are made easily in the microwave! This tasty little sweet treat is ready in no time at all and perfect for all occasions!
Prep Time 5 minutes
Cook Time 3 minutes
Total Time 8 minutes
Servings 12 bars
Author Holly


  • ¼ cup butter
  • 6 cups mini marshmallows
  • 1 teaspoon vanilla extract
  • 6 cups Rice Krispies cereal


  • Combine butter and marshmallows in a large bowl.
  • Cook on high heat for 1 minute. Stir. Continue cooking on high about 1-2 minutes more stirring until smooth. Mix in vanilla.
  • Add Rice Krispies cereal and stir until well coated.
  • Press into a greased 9x13" pan and cool completely.
5 from 7 votes↑ Click stars to rate now!
Or to leave a comment, click here!

Nutrition Information

Serving: 1bar | Calories: 168kcal | Carbohydrates: 32g | Protein: 1g | Fat: 4g | Saturated Fat: 3g | Trans Fat: 1g | Cholesterol: 10mg | Sodium: 128mg | Potassium: 20mg | Fiber: 1g | Sugar: 16g | Vitamin A: 1049IU | Vitamin C: 9mg | Calcium: 3mg | Iron: 4mg

Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.

Course Dessert, Snack
Cuisine American

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