Pineapple Upside-Down Cake

unsalted butter, melted

light brown sugar

pineapple slices, reserve juice for the cake

maraschino cherries

and ½ cups (190 grams) all-purpose flour, spooned & leveled

and ½ teaspoons baking powder

salt

unsalted butter, softened to room temperature

granulated sugar

brown sugar

large eggs, room temperature

pure vanilla extract

sour cream

whole milk

pineapple juice