Jammy Peach Upside-Down Cake

Ingredients

3 ripe peaches, sliced.

1 cup cake flour.

3/4 cup sugar.

1/2 cup unsalted butter, melted.

2 large eggs.

1 teaspoon vanilla extract.

1 teaspoon baking powder.

1/4 teaspoon salt.

1/2 teaspoon cinnamon.

Optional: whipped cream for serving.