2 sticks butter
2 tsp. vanilla
4 eggs
2 c. sugar
1 (16 oz.) sour cream
2 tsp. baking powder
4 c. flour

Cinnamon mix: 6 tbsp. sugar 3 tsp. cinnamon

Place 1/2 batter into 2 bread pans. Sprinkle cinnamon mixture on batter. Pour rest of batter over the mixture. Run a knife through and marble mixture. Bake 45 minutes to 1 hour at 350 degrees.