Preheat oven to 350. set up stand or hand mixer. Mix sugar and eggs until smooth Add butter sour cream cottage cheese and vanilla to the mixer. Continue the beatings.Add baking powder, salt and flour. Continue beating on low until combined. Pour batter into a well-greased pan. Put berries on top. Bake for 1 hour. Use a tester and see it comes clean. Remove from oven and sprinkle cinnamon sugar if using. Let sit for 30 minutes.