Ingredients
1 cup butter, softened1-1/2 cups sugar2 large eggs, lightly beaten1-1/2 teaspoons vanilla extract2 cups cake flour1 teaspoon baking powder1 teaspoon baking soda1 cup sour creamFILLING:1/2 cup chopped walnuts1/4 cup packed brown sugar2 tablespoons sugar1 teaspoon ground cinnamonTOPPING:7 tablespoons all-purpose flour1/4 cup packed brown sugar3 tablespoons sugar2 teaspoons ground cinnamon5 tablespoons cold butter1 cup chopped walnutsICING:1/4 cup confectioners’ sugar1-1/2 teaspoons whole milk1/4 teaspoon vanilla extract
Preparation
In a large bowl, cream butter and sugar. Beat in eggs and vanilla. Combine the flour, baking powder and baking soda; add to creamed mixture alternately with sour cream. Pour half of the batter into a greased 13x9-in. baking pan.
Combine filling ingredients; sprinkle over batter. Carefully top with remaining batter. For topping, combine the flour, sugars and cinnamon in a bowl; cut in butter until crumbly. Stir in walnuts. Sprinkle over batter.
Bake at 350° for 45-50 minutes or until a toothpick inserted in the center comes out clean. Cool on a wire rack. Combine icing ingredients; drizzle over coffee cake.
