This is the best easy banana upside down cake recipe. This simple and tasty recipe starts with a boxed cake mix and adds ripe bananas, butter, and brown sugar to make a gooey caramelized topping. It's going to be your new favorite dessert!
Combine butter and brown sugar and spread evenly in the bundt pan.
Top with chopped pecans.
Arrange sliced bananas over the pecans.
Prepare the cake mix according to package directions except reduce the oil required by ¼ cup to account for the liquid contained in the mashed bananas.
Bake for 50 to 60 minutes or until cake tester inserted in the thickest part of the cake comes out clean.
Allow to cool for 10 to 15 minutes, then invert on a serving platter. You may have to scrape some of the nut mixture out of the pan if it sticks.