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No-Bake Marshmallow Bars

These no-bake marshmallow bars are quick, gooey treats made with melted marshmallows, butter, and crispy cereal. The mixture comes together in a pan, resulting in soft, sticky bars with a satisfying crunch and chewy texture. Perfect for when you want a simple, sweet snack without turning on the oven.
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Prep Time 10 minutes
Cook Time 5 minutes
Total Time 15 minutes
Servings: 12
Course: Main Course
Cuisine: American
Calories: 150
Ingredients Equipment Method Notes

Ingredients
  

  • 4 cups mini marshmallows preferably mini for quick melting
  • 3 tablespoons unsalted butter can substitute with coconut oil for dairy-free
  • 1.5 cups crispy rice cereal or cornflakes for variation
  • 1 teaspoon vanilla extract optional but enhances flavor
  • chocolate chips optional chocolate chips for drizzling or mixing in

Equipment

  • 9x13 inch baking pan
  • Silicone spatula
  • Microwave-safe bowl
  • Parchment paper
  • Sharp Knife

Method
 

  1. Line your 9x13 inch pan with parchment paper, leaving overhang on the sides for easy removal.
  2. Add the mini marshmallows and butter into a microwave-safe bowl. Microwave in 30-second bursts, stirring each time, until the mixture is smooth, glossy, and fully melted—about 1-2 minutes in total.
  3. Pour the melted marshmallow mixture into the prepared pan. Use a silicone spatula to spread it evenly across the surface, pressing gently to help it settle.
  4. Sprinkle the crispy rice cereal evenly over the marshmallow layer. Gently press the cereal down with the spatula so it sticks well to the marshmallow.
  5. Allow the mixture to sit at room temperature for about 30 minutes, or refrigerate for 15-20 minutes, until it firms up enough to cut cleanly.
  6. Lift the entire block out of the pan using the parchment overhang. Place it on a cutting board.
  7. Use a sharp knife dipped in hot water and wiped dry to cut the bars into squares or rectangles. Wipe the blade between cuts for clean edges.
  8. If desired, melt a handful of chocolate chips and drizzle over the bars for an extra touch of sweetness. Let set for 10 minutes before serving.
    4 cups mini marshmallows
  9. Enjoy these sticky, crunchy bars immediately or store in an airtight container for up to 3 days for best freshness.

Notes

For a dairy-free version, substitute butter with coconut oil. Feel free to add nuts or chocolate chips for variety.