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Monster Rice Krispie Treats

These oversized Rice Krispie treats are a fun twist on the classic snack, featuring a satisfyingly crunchy exterior and a soft, marshmallowy interior. They’re crafted by melting butter and marshmallows, then folding in cereal and optional add-ins, before pressing into a pan to set. The final result is a chunky, gooey, and irresistibly nostalgic treat perfect for sharing and customizing.
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Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings: 12
Course: Main Course
Cuisine: American
Calories: 150
Ingredients Equipment Method Notes

Ingredients
  

  • 4 tablespoons unsalted butter for richness and sticking
  • 10 cups mini marshmallows preferably mini for quick melting
  • 6 cups puffed rice cereal light and crunchy base
  • 1 teaspoon vanilla extract adds aroma and flavor
  • optional chocolate chips, sprinkles, nuts customize as desired
  • a pinch salt balances sweetness
  • for greasing cooking spray or butter to prevent sticking

Equipment

  • Large saucepan
  • Rubber spatula
  • 9x13-inch baking dish
  • Parchment paper or buttered foil
  • Sharp knife or pizza cutter

Method
 

  1. Gather your butter, marshmallows, cereal, vanilla, and optional add-ins. Prepare your baking dish by lining it with parchment paper or buttering it lightly.
  2. Place the butter in a large saucepan over low heat, allowing it to melt slowly with a gentle sizzle and a fragrant buttery aroma filling the air.
  3. Add the mini marshmallows to the melted butter, stirring constantly. Watch as they melt into a glossy, gooey mixture with a soft bubbling sound, until completely smooth and shiny.
  4. Remove the saucepan from heat and stir in the vanilla extract, mixing until evenly incorporated and fragrant.
  5. Pour the marshmallow mixture over the puffed rice cereal in a large bowl. Use a rubber spatula to gently fold and combine, being careful not to crush the cereal but ensuring everything gets coated in the gooey mixture.
  6. If desired, fold in chocolate chips, sprinkles, or nuts for extra texture and flavor.
  7. Transfer the mixture to your prepared baking dish. Using a buttered spatula or your fingers, press it firmly and evenly into the pan, creating a thick, compact layer with a slightly textured surface.
  8. Let the treats cool at room temperature for 30-40 minutes until they are set and firm, with a slight golden hue around the edges.
  9. Once cooled, use a sharp knife or pizza cutter to cut the treats into generous squares or rectangles, revealing the soft marshmallow center encased in a crunchy shell.
  10. Serve your monstrous Krispies with a cold glass of milk or enjoy on their own—these treats are best when fresh and still slightly gooey inside.

Notes

Feel free to customize your treats with different mix-ins or toppings! For a thicker, more monster-sized treat, press the mixture into a deeper pan and cut into larger portions. For extra crunch, sprinkle a bit of sea salt on top before cooling.