Cinnamon Swirl Coffee Cake

1 cup margarine
2 cups granulated sugar
4 eggs
3 cups all-purpose flour
3 teaspoons baking powder
1/4 teaspoon salt
1/4 teaspoon baking soda
1 cup milk
2 teaspoons vanilla extract
2 tablespoons cinnamon mixed with 2 tablespoons
    granulated sugar (save this for last step)

Cream the margarine with the sugar. Add the eggs, one at a time. Mixall the dry ingredients and add to the batter alternately with the milk. Add the vanilla extract. Pour half into an angel food pan, add the cinnamon/sugar mixture on top, then add the rest of the batter. Using a table knife swirl it around and through the batter. Bake in a 375 degree F oven for 60 minutes.