1/2 cup butter
1 cup sugar
2 eggs
2 cups flour
1 t baking powder
1 t baking soda
1/2 t salt
1 cup sour cream (if not full cup, finish with milk) or yogurt
Topping/Filling:
1/4-1/2 cup butter, softened
1/2 cup flour
1/3 cup brown sugar
1/2 t cinnamon
chopped walnuts
Cream wet ingredients. Mix dry ingredients together and fold into wet ingredients. Grease and flour a 9x9" pan, and pour half of the cake mixture in, flattening to fill the pan. Mix the flour, brown sugar, and cinnamon together, and then cut the butter in until moist and crumbly. Mix in walnuts if desired. Spread 1/3 of the topping on the batter in the pan, spread the rest of the cake batter on top, and then the rest of the topping. Bake in 350 degree oven for 35-40 minutes or until no longer jiggly.
