Dig into this deliciousness of Honey Bun Cake, where a simple yellow cake mix transforms into a sweet and satisfying treat. No fancy skills required—just mix, bake, and relish every bite of the irresistible cinnamon swirl.
Preheat oven to 325°F. Grease a 9x13-inch cake pan with cooking spray and set aside.
In a large bowl, combine the yellow cake mix, eggs, vegetable oil, and sour cream. Mix until well combined and smooth.
In a separate small bowl, mix together the brown sugar and ground cinnamon until fully incorporated.
Pour half of the batter into the prepared baking pan, spreading it out evenly.
Sprinkle all of the brown sugar mixture evenly over the batter. Top with the rest of the batter. It's okay if you don't have enough to reach the outer edges, just smooth out the best you can.
Place the cake in the preheated oven and bake for 36-38 minutes, or until a toothpick inserted into the center comes out clean.
While the cake is baking, prepare the glaze. In a bowl, whisk together the powdered sugar, milk, and vanilla extract until smooth.
When the cake comes out of the oven, let it cool for about 10-15 minutes before you drizzle the glaze over the top of the cake. Allow the glaze to set before serving.