Rich Peanut Butter Bars
["1/2 c. peanut butter", "1/2 c. butter", "1 1/2 c. sugar", "2 eggs", "1 tsp. vanilla", "1 c. flour (self-rising)"]
["Heat oven to 350\u00b0.", "Grease and flour a 13 x 9 x 2-inch pan. Melt butter and peanut butter in a bowl over hot water.", "Add remaining ingredients.", "Stir until blended.", "Bake in a 350\u00b0 oven for 20 to 25 minutes.", "Cool and cut into squares.", "Yields about 2 dozen squares."]
["peanut butter", "butter", "sugar", "eggs", "vanilla", "flour"]