2 cups of sliced fresh peaches or nectarines, or whole blueberries, strawberries, raspberries, blackberries or a combination of fruits (or a 12-ounce package of frozen berries)
1 tablespoon sugar
Adjust oven rack to upper-middle position, and heat oven to 350 degrees.
Put butter in an 8-inch square or 9-inch round pan; set in the oven to melt. When the butter has melted, remove the pan from the oven.
Whisk flour, 3/4 cup of sugar, baking powder and salt in a small bowl. Add milk; whisk to form a smooth batter. Pour batter into the pan, then scatter fruit over batter. Sprinkle with remaining 1 Tb. of sugar.
Bake until batter browns and fruit bubbles, 50 to 60 minutes. Serve warm or at room temperature with a dollop of whipped cream or a small scoop of vanilla ice cream, if desired.