Preheat oven to 350°F (175°C) and grease a 9x13 inch baking pan to ensure easy release.
In a large bowl, whisk together red velvet cake mix, sour cream, eggs, vegetable oil, water, granulated sugar, and 1 teaspoon of vanilla extract until smooth and well combined.
In a separate bowl, mix the brown sugar and ground cinnamon. Fold half of the cake batter into this mixture to create the honeybun swirl.
Pour half of the red velvet batter into the greased pan, sprinkle the brown sugar mixture evenly on top, then pour the remaining batter over it.
Bake for 30–35 minutes, or until a toothpick inserted in the center comes out clean. Cool completely before frosting.
For the icing: beat together cream cheese, butter, powdered sugar, vanilla extract, and ground cinnamon until smooth. Add milk as needed to reach desired consistency.
Once the cake is cool, drizzle or spread the cinnamon cream cheese icing over the top. Slice and serve!
Notes
For extra indulgence, drizzle a bit of caramel sauce or sprinkle chopped pecans on top before serving. Store leftovers in the refrigerator for up to 4 days.
Keyword Cinnamon Cream Cheese Frosting, Honeybun Cake, Red Velvet