½cupblanchedsliced almonds (plus more for garnishing top of the cake)
2teaspoonsbaking powder
½teaspoonsalt
1cupbuttersoftened, plus more for buttering pan
1 ½cupsgranulated sugar
2teaspoonsalmond extract
1teaspoonvanilla extract
2large eggsroom temperature
1cupsour cream
Topping
½lb.rhubarbhalved horizontally and cut lengthwise if thick
¼cupsliced almonds
2tablespoonsgranulated sugar
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Instructions
Preheat the oven to 350° degrees. Butter sides and bottoms of a 9-inch springform pan (or use nonstick cooking spray).
In a spice or nut grinder (or food processor or blender), pulse the almonds until finely ground. Then in a medium bowl, combine the flour, ground almonds, baking powder, and salt. Set aside.
With an electric mixer or stand mixer, cream the butter and sugar until light and fluffy; about 5 minutes. Beat in the eggs, one at a time, until mixed, then add the almond and vanilla extracts along with the sour cream.
Beat in the flour mixture just until mixed with no dry flour streaks.
Transfer the dough to the springform pan and smooth the batter with a spatula. Top with rhubarb, creating your desired pattern. Sprinkle with almonds and 2 tablespoons of granulated sugar.
Bake 40 minutes to 1 hour, or until the top is golden and springs back when lightly pressed. During the last 10 minutes of baking, place a sheet of parchment paper over the cake if it is browning too quickly. Cool in the pan on a wire rack for 10 minutes before removing the sides of the pan. When ready to serve, sift powdered sugar on top and slice into wedges.