Follow these simple steps to create your Pineapple Upside-Down Cake:

1. Preheat your oven: Set your oven to 350°F (175°C) to begin warming up.
2. Prepare the pan: In a 9-inch round cake pan, melt the butter in the oven. Once melted, sprinkle the brown sugar evenly over the butter.
3. Arrange the pineapple: Place the drained pineapple slices over the brown sugar mixture, making sure they cover the bottom of the pan. You can place a maraschino cherry in the center of each pineapple ring for a decorative touch.
4. Mix dry ingredients: In a bowl, combine flour, baking powder, baking soda, and salt. Stir gently to mix.
5. Mix wet ingredients: In a separate bowl, combine granulated sugar, milk, vanilla extract, and eggs. Whisk until well combined and smooth.
6. Combine wet and dry: Gradually add the dry ingredients to the wet mixture, mixing until fully combined without over-mixing.
7. Pour the batter: Carefully pour the cake batter over the arranged pineapple in the cake pan, ensuring it covers the pineapple evenly.
8. Bake: Place the pan in the preheated oven and bake for 30-35 minutes. The cake is done when a toothpick inserted into the center comes out clean.
9. Cool slightly: Once baked, remove from the oven and let it cool for about 10 minutes in the pan.
10. Invert the cake: Carefully run a knife around the edges of the cake, then place a plate over the pan and invert it to release the cake. Let it sit for a moment before removing the pan.

These steps will guide you through the process of creating a delightful and beautiful Pineapple Upside-Down Cake, perfect for any occasion!