Step 1

Grease a 9x13 inch dish.

Step 2

In a large microwave-safe bowl, heat marshmallows, butter and peanut butter on high power for 2 minutes.

Step 3

Using a spatula, stir until the marshmallows are completely melted and the mixture is smooth.

Step 4

Add the chocolate cereal. Stir with a spatula until mixed together well.

Step 5

Press the cereal mixture into your 9x13 dish.

Step 6

Allow to cool completely before eating.