1 (10 oz.) pkg. marshmallows (about 40)
1/4 c. butter
1/3 c. peanut butter
7 1/2 c. or 1 (10 oz.) pkg. Kellogg's Frosted Flakes

In a 4-quart microwavable bowl, melt marshmallows and butter on high for 3 minutes, stirring halfway through cooking. Stir in peanut butter until mixture is smooth. Add Kellogg's Frosted Flakes, stirring until coated.

Using buttered spatula or waxed paper, press into a lightly greased 9x13x2 inch pan. Cut into 1 1/2 x 2 inch bars. Makes 32 bars. 90 calories each.