INA'S PLUM TATIN
Recipe lightly adapted from Ina Garten
Don't omit the extra step of lining the cake pan with parchment paper. It will help ensure the plums don't stick to the bottom. I ended up being low on all-purpose flour the day I baked this, and used half spelt instead. The results were wonderful.
6 tablespoons (3/4 stick) unsalted butter; room temperature
1 pound plums, pitted and sliced into 1/2-inch pieces (about 5 to 6)
1 3/4 cups granulated sugar, divided
2 large eggs, at room temperature
1/3 cup sour cream
1/2 teaspoon grated lemon zest
1/2 teaspoon pure vanilla extract
1 cup plus 2 tablespoons all-purpose flour
1/2 teaspoon baking powder
1/4 teaspoon kosher salt
Whipping cream, for serving
Preheat the oven to 350°F and line a 9-inch springform pan with parchment paper.
Combine 1 cup of the sugar and 1/3 cup water in a small saucepan. Cook over high heat, until it turns a warm amber color and registers about 360°F on a candy thermometer. Swirl the pan, and pour evenly over the plums.
While the caramel bubbles, cream the butter and remaining 3/4 cup of sugar in the bowl of a stand mixer fitted with the paddle attachment until light and fluffy, about 3 minutes. On low speed, beat in the eggs one at a time, then add the sour cream, zest, and vanilla. Stir the flour, baking powder, and salt in a small bowl, then add it to the mixer while on low speed; mix until just combined.
Pour the cake batter evenly over the plums and bake for 30 to 40 minutes, until a cake tester comes out clean. (My cake was perfect at 35 minutes) Cool for 20 minutes, then invert the cake onto a flat plate and remove the parchment paper. Serve warm or at room temperature, with a dollop of whipped cream.