Ingredients
4 tablespoons unsalted butter, room temperature, plus more for skillet
1 cup all-purpose flour, plus more for skillet
1/2 teaspoon baking powder
1/4 teaspoon baking soda
Coarse salt
3/4 cup plus 2 tablespoons sugar
1 large egg
1/2 cup low-fat buttermilk
2 ripe medium plums, thinly sliced
Preparation
Preheat oven to 375 degrees. Butter an 8-inch ovenproof skillet(preferably cast-iron); dust with flour, tapping out excess.Whisk together flour, baking powder, baking soda, and1/2 teaspoon salt. Beat butter and 3/4 cup sugar with a mixeron medium speed until pale and fluffy. Beat in egg. Addflour mixture in 3 additions, alternating with buttermilk.
Pour batter into prepared skillet, and smooth topwith an offset spatula. Fan plums on top, and sprinkle withremaining 2 tablespoons sugar. Bake until goldenbrown and a toothpick inserted into the center comes outclean, 35 to 40 minutes. Let cool slightly.
