Preheat your oven to 350°F (175°C).

Grease the 9-inch round cake pan with butter and sprinkle the brown sugar evenly on the bottom.

Place the drained pineapple slices over the brown sugar in the pan. Add a cherry in the center of each slice for garnish.

In a mixing bowl, combine the flour, granulated sugar, salt, and baking powder.

In another bowl, whisk together the milk, eggs, vanilla extract, and softened butter.

Gradually add the wet mixture to the dry ingredients, stirring until just combined.

Carefully pour the batter over the arranged pineapple in the cake pan.

Bake in the preheated oven for 35-40 minutes or until a toothpick inserted in the center comes out clean.

Let the cake cool for a few minutes before inverting it onto a serving plate.