Plum Upside-Down Cake

This is an update of the Nectarine upside-down cake. I tweaked the recipe just a tiny bit and I like this version better.

Ingredients

For topping
3 tablespoons unsalted butter
1/2 cup packed light brown sugar
3-4 plums cut into thin wedges.
For cake
1 cup all-purpose flour
1/4 cup granulated sugar
1 teaspoon baking powder
1/2 teaspoon baking soda
1/2 teaspoon salt
1/2 teaspoon cinnamon
5 tablespoons cold unsalted butter, cut into pieces
1/2 cup milk

9-inch round

Directions

Preheat oven to 425°F.

Make topping:
Heat butter in saucepan. Stir in brown sugar and remove from heat. Pour mixture into a 9-inch round pan and spread evenly. Arrange the fruit on top of that, either overlapping in a nice pattern or haphazardly arranged--you choose.

Make cake:
Blend flour, sugar, baking powder and soda, salt, and cinnamon in a food processor. Add butter and pulse until mixture resembles coarse meal. Add milk and pulse until mixed.

Drop batter on top of fruit and gently spread, leaving a 1-inch border around edge of skillet. (Cake needs room to expand.)

Bake cake in middle of oven until golden brown and firm to the touch, 20 or so minutes. Cool cake in skillet on a rack 3 minutes, then invert onto a platter. If some of the fruit sticks to the pan, don't worry. Just place it back on top of the cake.

Serve with ice cream or creme fraiche.