Step 1

Spray an 11x7 or 9x9 pan with cooking spray.

Step 2

In a large pot melt butter over low heat. Add marshmallows and cook over medium-low heat until marshmallows are completely melted.

Step 3

Once marshmallows are melted, remove pot from heat and add cereal to the pot, stirring to coat.

Step 4

Press into prepared pan and cool. Cut into bars and serve.