Creating the perfect Bourbon Peach Upside Down Cake is simple if you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Prepare a 9-inch round cake pan by greasing it lightly.

2. Prepare Peaches: In a bowl, mix the sliced peaches with bourbon and set aside to soak while you prepare the batter.

3. Make the Topping: In a saucepan, melt the butter over medium heat. Stir in the brown sugar and cook until the mixture is bubbly. Remove from heat and pour it into the prepared cake pan.

4. Arrange Peaches: Evenly arrange the bourbon-soaked peach slices over the brown sugar mixture in the pan.

5. Mix Dry Ingredients: In a bowl, whisk together the flour, baking powder, baking soda, and salt.

6. Mix Wet Ingredients: In another bowl, beat the granulated sugar and eggs until creamy. Add buttermilk and vanilla extract, mixing well.

7. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, stirring until just combined.

8. Pour Batter: Carefully pour the batter over the arranged peaches in the pan, smoothing it out with a spatula.

9. Bake: Bake in the preheated oven for 45-50 minutes, or until a toothpick inserted into the center comes out clean.

10. Cool and Invert: Allow the cake to cool in the pan for about 10-15 minutes. Then, carefully invert it onto a serving platter, so the peach topping is on top.