2 1/2 c. Bisquick baking mix
3 tbsp. sugar
3 tbsp. butter, melted
1/2 c. milk
1 1/2 c. sliced pared apples
1/4 c. sugar
1/2 tsp. ground cinnamon
2/3 c. sour cream
1 egg

Mix baking mix, 3 tablespoons sugar, butter and milk. Spread in greased 9 x 9 x 2 inch square pan. Mix 1/4 cup sugar and the cinnamon; sprinkle over apple. Mix sour cream and egg; drizzle over top. Bake at 375 degrees for 25-30 minutes until edges are light brown. Refrigerate any remaining coffee cake. 9 servings.