This easy upside down banana Bundt cake recipe gets flipped to have bananas and brown sugar on top. It starts with a cake mix, so it is super simple to make and really delicious.
Peel two of the bananas and place them in the bottom of a large mixing bowl. Using a fork, mash them until they are mostly smooth.
Add the cake mix, pudding mix, 1 teaspoon ground cinnamon, eggs, milk, and oil to the bowl with the mashed banana.
Using a hand mixer, beat until well mixed. Set aside.
Place the butter in a small bowl and microwave for a minute or until fully melted.
Add the brown sugar and the remaining teaspoon of cinnamon to the melted butter and mix until thoroughly combined.
Spray a standard bundt pan with nonstick cooking spray right before placing the brown sugar mixture in the bottom. Spread evenly.
Peel and slice the two remaining bananas. Place the banana slices in the brown sugar mixture in the bottom of the pan, covering the bottom in only one layer of bananas that slightly overlap in the middle.
Gently pour the cake batter over the top of the bananas and brown sugar. Make sure the cake batter spread to form an even layer.
Bake for 40 minutes at 350℉, or until a toothpick inserted into the middle comes out with a few moist or slightly sticky crumbs.
Remove from the oven and let rest for 5-10 minutes before gently inverting the cake onto a serving tray or large plate.
Cool completely before slicing and serving.
Notes
It is normal for a little bit of the brown sugar mixture to stay in the pan. If any bananas stay behind, just replace them where they came from. This cake is best stored in an airtight container in the refrigerator.