Creating your very own Banana Upside Down Cake is an enjoyable experience when you follow these straightforward steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking pan.
2. Prepare Bananas: Arrange banana slices nicely at the bottom of the prepared pan, covering it evenly.
3. Make Caramel Mixture: In a saucepan over medium heat, melt the unsalted butter with brown sugar until it’s bubbly and combined. Pour this mixture over the bananas in the pan.
4. Mix Dry Ingredients: In a bowl, sift together flour, baking powder, baking soda, and salt. Set aside.
5. Combine Wet Ingredients: In another bowl, beat the granulated sugar and eggs until fluffy. Add vanilla and mix well.
6. Add Buttermilk: Gradually mix in the buttermilk until the mixture is smooth.
7. Combine Mixtures: Gradually add the dry ingredients to the wet mixture, stirring gently until just combined. Avoid overmixing.
8. Pour Batter: Carefully pour the batter over the banana and caramel layer in the pan and spread it evenly.
9. Bake: Place in the oven and bake for 40 minutes or until a skewer inserted in the center comes out clean.
10. Cool: Once baked, allow the cake to cool in the pan for 10 minutes before inverting it onto a serving plate.

Following these steps will lead you to create a remarkable Banana Upside Down Cake that is sure to impress!