This gluten-free pineapple upside-down cake recipe is perfect for those with gluten sensitivities or celiac disease. The cake is made with a gluten-free flour blend and a buttery brown sugar topping, pineapple rings, and maraschino cherries. The cake is moist and flavorful, and no one will even know it's gluten-free. Serve it warm with a dollop of whipped cream or a scoop of vanilla ice cream for a delicious dessert.