Easy Cake Mix Coffee Cake
A 9×13-inch yellow cake-mix bake layered with a cinnamon-sugar and butter mixture, served in twelve pieces.
Ingredients
For the cake
- 1 box yellow cake mix (15.25 oz)
- 3 large eggs
- 1 cup sour cream
- 1/2 cup vegetable oil
- 1/4 cup milk
- 2 teaspoons vanilla extract
For the topping
- 1 cup packed brown sugar
- 1/2 cup granulated sugar
- 1 tablespoon ground cinnamon
- 1/4 teaspoon salt
- 6 tablespoons unsalted butter, melted
Instructions
- Grease a baking pan measuring 9×13 inches; set the oven to 350°F.
- Mix both topping sugars with cinnamon and salt, then stir in melted butter to moisten them.
- Combine the cake mix, milk, eggs, vanilla, oil, and sour cream into a smooth batter. Do not add extra package ingredients.
- Spread half the batter, scatter half the topping, then gently add the remaining batter and topping.
- Bake 32–36 minutes, continuing if a center toothpick shows wet batter.
- Cool at least 20 minutes before cutting twelve portions.
Notes
Seal the cooled, uniced cake and keep at cool room temperature for up to three days.