NECTARINE UPSIDE-DOWN CHIFFON CAKE
SOURCE: DORIE GREENSPAN. BAKING WITH JULIA: SAVOR THE JOYS OF BAKING WITH AMERICA'S BEST BAKERS.
Ingredients
Almond-Oatmeal Streusel Filling
1/4 cup/30 grams unblanhed whole almonds
1/3 cup/40 grams all-purpose flour
1/4 cup/60 grams packed dark brown sugar
1 teaspoon/3 grams ground Ceylon cinnamon
1 teaspoon/3 grams ground ginger
4 tablespoons/57 grams unsalted butter, cut into small pieces
1/2 cup/40 grams quick-cooking oats
Chiffon Cake
4 tablespoons/60 grams unsalted butter, cut into 3 or 4 chunks
1/2 cup/120 grams packed dark brown sugar
4 to 5 medium-sized nectarines, peeled and cut into 8 pieces
1 1/2 cups/300 grams granulated sugar
1 cup/130 grams all-purpose flour
1 teaspoon/4 grams baking powder
1 teaspoon/5 grams baking soda
1/4 teaspoon/2 grams salt
4 large egg yolks
1/2 cup/120 mL vegetable oil
1/2 cup/120 mL freshly squeezed lemon juice
6 large egg whites
Specific Equipment
Baking sheet lined with parchment paper
Food processor
Springform cake pan with a diameter of 10 inches/25 cm and height of 3 inches/7.6 cm
Aluminum foil
Medium-sized bowl
Sifter or fine-mesh strainer
2 large bowls
Wire whisk
Hand or stand mixer equipped with a wire whisk attachment
Spatula
Offset spatula
Cake rack
Serves 8 to 10
Instructions
1. Preheat oven to 350°F/175°Ç.
2. Place the almonds on a baking pan lined with parchment paper and bake for 10 to 15 minutes, shaking the pan occasionally, or until the almonds have slightly browned from toasting. Remove the baking pan from the oven and cool the almonds completely
3. Chop the toasted almonds, flour, brown sugar, cinnamon, ginger, butter, and oats in a food processor for a few pulses or until the mixture is well-blended, rough, and crumbly. Spread the mixture back into the baking pan lined with parchment paper.
4. Bake for 10 to 15 minutes, stirring the mixture a few times, or until the streusel has turned golden brown. Remove the baking pan from the oven to cool the streusel completely and set aside.
5. Toss the butter into the springform pan and set directly over medium-low heat until the butter has completely melted. Remove the pan from heat and sprinkle over the brown sugar evenly to completely coat the bottom, patting the sugar down. Lay over the nectarine slices in concentric circles to completely cover the layer of brown sugar. Wrap the bottom of the springform pan in aluminum foil to catch any butter and nectarine juices that might drip out during baking. Set the pan aside.
6. Sift 1 cup/200 grams sugar, flour, baking powder, and baking soda in a medium-sized bowl through a sifter or fine-mesh strainer. Whisk in the salt until well-blended and set aside.
7. Whisk the egg yolks, vegetable oil, and lemon juice altogether in a large bowl with a wire whisk until well-blended. Beat in the dry ingredients gradually, occasionally whisking, and set aside.
8. Beat the egg whites to soft peaks in a large bowl with a hand or stand mixer equipped with a wire whisk attachment. Pour in 1/2 cup/50 grams sugar gradually and continue beating to stiff and glossy peaks.
9. Scrape out one-third of the egg whites with a spatula and fold it into the egg yolk mixture to lighten the batter. Turn the egg yolk mixture into the egg whites and fold gently and thoroughly until well-blended.
10. Scrape half of the cake batter into the nectarine-lined springform pan. Smooth the layer with an offset spatula and sprinkle over the streusel filling, reserving a heaping tablespoonful for cake decoration. Pour in the remaining half of the cake batter and smooth the top with an offset spatula.
11. Bake the cake for 45 to 50 minutes or until a toothpick comes out clean when inserted into the center of the cake.
12. Remove the springform pan from the oven and cool over a cake rack for 25 minutes. Invert the springform pan onto a cardboard cake round or cake plate and release the clip to remove the collar of the pan. Serve the cake with a spoonful of whipped cream and a light sprinkle of the leftover streusel.