This Banana Coconut Upside Down Cake recipe has a layer of bananas and coconut with a brown sugar sauce infusing every bite. No one will know that it started with a cake mix!
Preheat oven to 350°F and spray 2 (8 inch) round cake pans with cooking spray or even better line with parchment paper.
With an electric mixer, beat cake mix, eggs, oil, water, and sour cream on low until combined. Beat on high for 2 minutes.
Place banana slices evenly on the bottom of the two cake pans.
In a small saucepan melt butter. Add brown sugar and heat until dissolved. Pour half of the brown sugar mixture into each of the 2 round cake pans over the bananas. Sprinkle coconut over brown sugar sauce.
Pour cake batter on top of the coconut into the two pans, dividing equally.
Bake 30-40 minutes or until toothpick in the center comes out clean. Remove from oven and let cake sit for at least 10 minutes so the bananas stay in place. Invert onto serving dishes. Slice to serve.