Rippled Cinnamon Bun Coffee Cake

• 1 (18 1/4 ounce) package yellow cake mix
• 1 cup sour cream
• 4 eggs
• 23 cup vegetable oil
• 1 cup packed light brown sugar
• 1 tablespoon ground cinnamon
• 2 cups powdered sugar
• 14 cup milk (or light cream if you want it thicker)
• 2 teaspoons vanilla extract

1. Heat oven to 350*F. Grease a 13x9x2" baking pan.
2. In a large bowl, combine the cake mix, sour cream, eggs, and oil; beat with an electric mixer on medium speed until batter is thick and well blended.
3. Spread 1/2 the batter into the prepared pan.
4. Combine the brown sugar and cinnamon; sprinkle over batter.
5. Carefully spread remaining batter on top; bake for 30 minutes or until a toothpick tests done.
6. Cool on a wire rack for 10 minutes.
7. Meanwhile, combine icing ingredients, adding enough powdered sugar and/or milk to desired consistency; drizzle icing over the warm cake.

yellow cake, sour cream, eggs, vegetable oil, brown sugar, ground cinnamon, powdered sugar, milk, vanilla

Taken from www.food.com/recipe/rippled-cinnamon-bun-coffee-cake-197052 (may not work)