Blueberry Upside Down Mini Cakes
Ingredients2 cups frozen blueberries1 lemon, zested and juiced, divided2 tablespoons white sugar2 tablespoons unsalted butter2 tablespoons brown sugar1/2 cup unsalted butter, softened1/2 cup white sugar2 eggs1 1/2 teaspoons vanilla extract1 1/4 cups all-purpose flour1 3/4 teaspoons baking powder1/2…