Ingredient list
1 cup butter
2 cups white sugar
2 eggs
1 cup sour cream
1/2 tsp vanilla extract
2 cups all purpose flour
1 tsp baking powder
1/8 tsp salt
1/3 cup all purpose flour
1/2 cup packed brown sugar
2 Tbsps melted butter
1 tsp ground cinnamon
Instructions
1. Preheat oven to 350 degrees. Grease a 9×13 baking pan (I use a loaf pan)
2. In a large bowl, cream together 1 cup butter and white sugar until light and fluffy. Beat in the eggs one at a time, then stir in the sour cream and vanilla. Mix in 2 cups flour, baking powder, and salt. Spread 1/2 of batter in the prepared pan.
3. Prepare the filling: In a medium bowl mix 1/3 cup flour, brown sugar, 2 Tbsp melted butter, and cinnamon. Sprinkle cake batter with 1/2 the filling. Spread second half of batter over the filling, and top with remaining filling.
4. Bake 35-40 minutes in the preheated oven, or until a toothpick inserted near the center comes out clean.