1 (10 oz) pkg regular marshmallows (40 pieces) or 4 cups mini marshmallows
1/4 cp butter
1/3 cp peanut butter
7 1/2 cp frosted flakes

In a large saucepan, melt marshmallows and butter on low or medium heat, stirring frequently. Stir in peanut butter until mix is smooth.

Add frosted flakes, stirring until well coated (do it fast!). Using a spatula (buttered), press the mix into a 13x9x2 inch pan (or standard cake pan works too) coated with cooking spray. Cut into bars when cool