This blueberry upside-down cake is a unique and delicious dessert that's perfect for impressing guests. The cake is made with a layer of fresh blueberries on the bottom, topped with a moist and fluffy cake. To make this cake, you'll need flour, sugar, baking powder, salt, milk, eggs, vanilla extract, butter, and fresh blueberries. Melt butter in a skillet, add brown sugar and blueberries, and cook until the sugar is melted and the blueberries are soft. Pour the mixture into a greased baking dish, then pour the cake batter on top. Bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean. Let the cake cool before flipping it over onto a serving platter.
