Good-Cooking - Cinnamon Swirl Coffee Cake

Ingredients

• 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