Peanut Butter Rice Krispies

3 tablespoons butter or margarine

4 cups miniature marshmallows

1/2 cup peanut butter

6 cups Rice Krispies cereal

In large saucepan melt butter over low heat. Add marshmallows and stir until completely melted. Remove from heat. Stir in peanut butter until melted. Add cereal. Stir until well coated. Evenly press mixture into 13 x 9 x 2-inch pan coated with cooking spray. Cool.

Can top with melted chocolate.