Preheat your oven to 325 degrees Fahrenheit. It’s essential that your oven is hot enough to create that beautiful golden crust. While it’s heating up, prepare a 9×13-inch baking dish by spraying it with cooking spray to prevent sticking.
In a large mixing bowl, combine the yellow cake mix, sour cream, vegetable oil, water, and eggs. Mix well until all the ingredients are thoroughly blended. You want a smooth batter without lumps, which will ensure a uniform texture in your cake.
In a separate small bowl, stir together the brown sugar and cinnamon. This mixture will add a delightful layer of flavor that complements the cake.
Pour half of the batter into your prepared pan, spreading it evenly across the bottom. This will be the first layer of your cake.
Next, sprinkle half of the brown sugar mixture evenly over the batter. This will create a lovely sweet layer that melts into the cake as it bakes.
Pour the remaining batter on top, spreading it gently to cover the brown sugar layer. You want to ensure it’s evenly distributed for a balanced bake.
Finish by sprinkling the remaining brown sugar mixture on top of the batter. This will form a crunchy, sweet topping that’s absolutely irresistible.
Place the cake in the oven and bake for 40 to 50 minutes. Keep an eye on it; the cake is done when it has risen and a toothpick inserted into the center comes out clean. The top should be golden brown and slightly firm to the touch.
Once baked, remove the cake from the oven and let it cool slightly in the pan. This is a crucial step, as it allows the flavors to settle and makes it easier to glaze.
In a small bowl, mix together the glaze ingredients (the powdered sugar and heavy cream) until smooth. Drizzle this delightful mixture over the cooled cake for a touch of sweetness.
