Filling: mix all ingredients into a bowl and set aside.
Cake: Using a mixer, cream butter and sugar, then add eggs one at a time, then vanilla. Next alternately add the Baking Mix and sour cream, mixing just enough to incorporate.
Into a greased 9” spring form pan, spoon 1/3 of the cake batter into pan, completely covering the pan bottom.
Sprinkle 1/3 of the filling over the batter (reserve two tablespoons of filling for the top). Layer the remaining batter and filling, then top with the reserved filling.
Using a knife, cut into the batter to ‘chunk’ up the top, then bake at 350°F for 45 to 50 minutes or until toothpick comes out clean.