Peanut Butter Bars

3/4 cups butter
3/4 cups sugar
3 eggs
3/4 cups brown sugar
1 1/3 cups flour
3/4 cup peanut butter
3/4 t baking soda
1/3 t salt
1 1/2 t salt
1 1/2 t vanilla
1 1/2 c rolled oats

combine all ingredients. Spread on a greased cookie sheet. Bake 350 degrees for 10 to 15 minutes. Beat 1 cup peanut butter and spread on warm bars. Frost with chocolate frosting.