2 cups flour

1 1/2 tsp baking powder

1 tsp baking soda

1/2 tsp salt

1 cup sugar

1/2 cup butter, at room temperature

2 lg eggs

1 cup sour cream

1 tsp vanilla

1 cup chocolate chips

CINNAMON SUGAR TOPPING/FILLING:

1/4 cup sugar

3 tbs brown sugar

1 1/2 tsp cinnamon

preheat the oven to 350 degrees. grease an 8″ square baking pan and set aside.

in a medium bowl, whisk together the flour, baking powder, baking soda, and salt. set dry ingredients aside.

using an electric mixer, cream together the butter and 1 cup sugar until fluffy, about 5 minutes. add in the eggs, one at a time. beat until smooth. beat in the sour cream and vanilla. mix until well combined.

slowly add the in the dry ingredients. mix until just combined. in a small bowl, make the cinnamon sugar/filling. stir together sugar, brown sugar, and cinnamon. pour half the batter into the prepared cake pan and sprinkle with half the cinnamon sugar and half the chocolate chips. spoon the remaining batter over the filling, spreading gently. sprinkle with the remaining cinnamon sugar and chocolate chips.

bake until golden and a toothpick inserted in the center comes out clean, about 40 minutes. cool to room temperature and serve.

yields 9-12 pieces of cake