Rice Krispies Peanut Butter Bars

1 10.5-ounce bag of miniature marshmallows
1/2 stick margarine
6 cups Rice Krispies
2 tablespoons peanut butter

Grease a 9x13 pan and set aside. In large glass mixing bowl, place 1/2 stick of margarine and marshmallows. Microwave for 3 minutes. Stir well, then add peanut butter stirring constantly. Add rice krispies coating well. Pour mixture into greased pan. Let stnand for 10 minutes. Cut into squares.

I Did something wrong with this. They were a bit to hard. I Think I didn't use enough marshmallows though.......The taste is awesome with the peanut butter flavor. But they were a bit hard.