This is an easy coffee cake, baked in a square or round layer-cake pan. INGREDIENTS:Topping:1/2 cup brown sugar1/4 cup sifted all-purpose flour (sift before measuring)1/4 cup butter, room temperature1 teaspoon cinnamon. Cake:1 1/2 cups sifted all-purpose flour (sift before measuring)2 1/2 teaspoons baking powder1/2 teaspoon salt1 egg, beaten3/4 cup sugar1/3 cup melted butter1/2 cup milk1 teaspoon vanilla extract Here’s How:Preheat over for 375° For the topping:In small mixing bowl, combine topping ingredients. Blend with fork until crumbly.  Set aside. For the cake:Sift 1 1/2 cups sifted flour with baking powder and salt into a bowl. In a medium bowl, beat together beaten egg and 3/4 cup sugar and 1/3 cup…