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+ servings

Monster Marshmallow Cereal Treats

Gooey marshmallow cereal treats filled with peanut butter, oats, chocolate chips, and M&Ms!


  • 5 tablespoons butter (70 grams)
  • 1/3 cup creamy peanut butter (90 grams)
  • 10 cups mini marshmallows , divided (430 grams)
  • 3 cups crispy rice cereal (80 grams)
  • 3 cups toasted whole grain oats cereal (84 grams)
  • 1/2 cup old fashioned oats (50 grams)
  • 1/4 cup mini chocolate chips (60 grams)
  • 1/4 cup mini M&Ms (42 grams)
  • 1/3 cup chopped peanuts (47 grams)
  • Additional mini chocolate chips, M&Ms, peanuts, etc. for sprinkling on top (optional)


  • Line a 9-inch square pan with greased foil or parchment paper.
  • In a large pot set over medium low heat, melt butter, peanut butter, and 8 cups of the mini marshmallows, stirring frequently.
  • Once completely melted, add crispy rice cereal, whole grain oats cereal, and oats and stir until combined.
  • Add the remaining 2 cups mini marshmallows, mini chocolate chips, mini M&Ms, and chopped peanuts and gently stir until incorporated.
  • Immediately dump into the prepared pan. Use a greased spatula or fingers to gently press mixture evenly into the pan, careful to too compact it too tightly. Sprinkle with additional mini chocolate chips, M&Ms, peanuts, etc. if desired.
  • Let sit for 30 minutes (or in the fridge for 10 minutes), then slice and serve. Store in an airtight container.


Sodium: 109mg, Calcium: 32mg, Vitamin C: 1mg, Vitamin A: 253IU, Sugar: 22g, Fiber: 1g, Potassium: 96mg, Cholesterol: 10mg, Calories: 248kcal, Saturated Fat: 4g, Fat: 10g, Protein: 4g, Carbohydrates: 39g, Iron: 2mg
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