Peanut Butter Fingers

3/4 cup margarine, melted                               1/2 cup sugar

1 1/3 cup brown sugar                                     3/4 cup peanut butter

2 eggs                                                              3/4 tsp baking soda

1/8 tsp salt                                                       1 tsp vanilla

2 cups flour                                                     2 cups oats

Preheat oven to 325 degrees.  Mix margarine, sugars, peanut butter, eggs, baking soda, salt and vanilla together.    Stir in flour and oats.  Spread batter on buttered cookie sheet.  Bake for 12 to 15 minutes.  Take out of oven and spread 1 cup peanut butter that has been whipped on top.  When cool, frost with chocolate frosting.