together butter and sugar. Add eggs one at a time; beating well. Sift together flour, baking powder, baking soda, and salt. Add flour mixture and sour cream alternately to creamed mixtue, beating until smooth after each addition. Pour batter into greased 9 x9 x 5 cm pan. Sprinkle stresual topping over batter. Bake at 350' 30 to 35 minutes until done. Serve warm. Stresel topping: Combine the half cup brownulated sugar, 1 tabl flour, and 3 teaspoon cinnamon. Add 2 tablespoons melted butter and 0.75 cup chopped peca or walnuts. Note: for a crumbly topping use 3 Tablespoons instead of 2 in topping ingredients. From pkg, 0. 0.51612903225806 ----