9x13 inch baking pan Greased and floured
Large mixing bowls For cake batter
Electric mixer Hand or stand mixer
Measuring cups and spoons
Rubber spatula For folding and spreading
Wire cooling rack For cooling the cake
the Cake:
- 1 box yellow cake mix Any brand
- 4 large eggs room temperature
- ¾ cup vegetable oil Neutral flavor
- 1 cup sour cream Full fat preferred
- 1 teaspoon vanilla extract Pure or imitation
the Cinnamon Filling:
- ½ cup brown sugar packed
- 2 teaspoons ground cinnamon Freshly ground for best flavor
- ¼ cup butter melted
the Glaze:
- 2 cups powdered sugar Sifted for smooth glaze
- ¼ cup milk Adjust for consistency
- 1 teaspoon vanilla extract Pure or imitation
- 2 tablespoons butter melted
Prepare Your Pan and Oven
Preheat your oven to 350°F (175°C)
Grease and flour a 9x13 inch baking pan, or use baking spray with flour
Make the Cake Batter
In a large bowl, combine the yellow cake mix, eggs, vegetable oil, sour cream, and vanilla extract
Beat with an electric mixer on medium speed for 2-3 minutes until smooth and well combined
The batter will be thicker than typical cake mix batter due to the sour cream
Create the Cinnamon Filling
In a separate bowl, mix together the brown sugar and ground cinnamon
Stir in the melted butter until the mixture resembles wet sand
Layer and Swirl
Pour half of the cake batter into your prepared pan
Sprinkle the cinnamon-sugar mixture evenly over the batter
Pour the remaining batter on top
Use a knife to gently swirl the layers together, creating a marbled effect
Bake the Cake
Bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean
The top should be golden brown and slightly springy when touched
Make the Glaze
While the cake is baking, whisk together powdered sugar, milk, vanilla extract, and melted butter
The glaze should be pourable but not too thin
Nutrition information is automatically calculated, so should only be used as an approximation. Serving: 80g | Calories: 320kcal | Carbohydrates: 45g | Protein: 3g | Fat: 14g | Saturated Fat: 4g | Polyunsaturated Fat: 6g | Monounsaturated Fat: 3g | Cholesterol: 45mg | Sodium: 280mg | Potassium: 100mg | Fiber: 1g | Sugar: 32g | Vitamin A: 180IU | Calcium: 80mg | Iron: 1mg