Sour Cream Crumb Coffee Cake
["1/3 c. butter", "1 c. sugar", "2 eggs", "1 c. sour cream", "1 tsp. vanilla", "2 c. flour", "1 tsp. baking soda", "1 tsp. baking powder", "1/2 tsp. salt"]
["Cream butter and sugar.", "Add eggs, one at a time; mix well. Add sifted dry ingredients alternately with mixture of sour cream and vanilla.", "Beat until smooth after each addition.", "Pour half the batter into greased 9 x 9 x 2-inch pan and sprinkle half the topping mixture over it.", "Cover with rest of batter, then sprinkle with remaining topping.", "Bake at 325\u00b0 for 45 minutes."]
["butter", "sugar", "eggs", "sour cream", "vanilla", "flour", "baking soda", "baking powder", "salt"]