Step 1

Grease a 13×10 baking pan.

Step 2

In a microwave friendly bowl, combine the butter and marshmallows. Cook for 1 minute, then stir. Add the peanut butter and cook for another minute. Stir in Cheerios.

Step 3

Press into pan. Use the bottom of your measuring cup to press down onto the cookies.

Step 4

Let sit for about 10 minutes and cut.