1 c. self rising flour
1/2 c. peanut butter (smooth or chunky)
1/2 c. butter
1 1/2 c. sugar
2 eggs
1 tbsp. vanilla

Preheat oven to 350 degrees; grease and flour 13"x9"x2" baking pan. Heat peanut butter and butter together until melted. Stir in sugar, eggs and vanilla until well blended. Add flour and stir just until blended. Spread batter into pan. Bake for 25 to 30 minutes. Cool and cut into bars.