PEACH FRUIT SQUARES 1/2 lb. butter 3 cups flour 1 cup sugar 1 tsp. baking powder 1 tsp. baking soda 4 egg yolks 8 oz. sour cream 1 tsp. lemon juice 1 cup ground nuts (walnuts, pecans, hazelnuts all work well) 2 cups homemade jam or good-quality store-bought jam Combine butter and flour (do not over mix.) Add remaining ingredients except nuts and jam, and mix.