Step 1

Preheat the oven to 350℉/180℃. Spray a 13x9 inch baking pan with non-stick cooking spray and set aside.

Step 2

Add the cake mix, vegetable oil, eggs, and sour cream to a large bowl and beat with an electric mixer on medium speed for 2 minutes.

Step 3

Add the brown sugar, pecans, and ground cinnamon to a small bowl and mix to combine.

Step 4

Pour half of the cake batter into the prepared pan. Sprinkle the brown sugar mixture evenly over the batter. Pour the remaining batter evenly over the pecan mixture and use a spatula to gently spread the cake batter over the filling.

Step 5

Place the cake in the oven and bake for 30-35 minutes or until a toothpick inserted in the center comes out clean. Remove the pan from the oven and place on a cooling rack.

Step 6

In a small bowl, stir together the powdered sugar, milk, maple syrup, and maple extract. If your glaze is too stiff, add more milk.

Step 7

Use a fork to poke holes over the entire surface of the warm cake and carefully pour and spread the glaze over the cake. Let the cake cool completely before serving.