Peanut Butter Bars

1 cup peanut butter, plus extra for frosting

1 cup margarine

1 cup sugar

1 cup brown sugar

2 eggs
1 tsp vanilla

1 tsp baking soda

2 cups flour

1 tsp salt

2 cups oatmeal
1.5 cups semi-sweet chocolate chips
2 Tbsp milk

Cream peanut butter, margarine, and sugars. Add eggs and vanilla. Stir in remaining ingredients. Mix together and press into a greased large jelly roll pan. Bake at 350 for 10 minutes. Cool completely before frosting. To make chocolate frosting: Melt chocolate chips in a microwave-safe bowl on High for 1 minute. Stir until smooth. When bars are cool frost with a layer of peanut butter, then chocolate frosting.