Combine flour, sugar, & baking powder. Add juice from peaches & mix. Melt butter in baking dish. Pour batter into baking dish. Place peach slices over batter. Bake at 350*F for about 45 minutes or until light golden brown.
Optional**I take mine out after 30 minutes of baking time & run a stick of butter over the top a few times; then sprinkle a mixture of sugar, brown sugar, & cinnamon over the top. Place back in the oven for the remaining 15 minutes of baking time.**