Ingredients for - Sponge Cake with Blueberry Topping

1. 6 large eggs, separated
2. 1-1/2 cups sugar
3. 3/4 cup orange juice
4. 1-1/2 cups all-purpose flour
5. 1-1/2 teaspoons baking powder
6. 1/4 teaspoon cream of tartar
7. BLUEBERRY TOPPING:
8. 1/2 cup sugar
9. 2 teaspoons cornstarch
10. 1 tablespoon grated orange zest
11. 1/2 cup orange juice
12. 2 cups fresh or frozen blueberries
13. SOUR CREAM TOPPING:
14. 2 cups sour cream
15. 1 tablespoon confectioners' sugar
16. 1 teaspoon vanilla extract
17. Grated orange zest, optional

How to cook deliciously - Sponge Cake with Blueberry Topping

1 . Stage

Let eggs stand at room temperature for 30 minutes. Sift flour and baking powder; set aside.

2 . Stage

Place oven rack in lowest position. Preheat oven to 325°. In a large bowl, beat yolks until slightly thickened. Gradually add sugar, beating until thick and lemon-colored. Blend in orange juice. Add dry ingredients to yolk mixture until well blended

3 . Stage

Add cream of tartar to egg whites; with clean beaters, beat on high until stiff but not dry. Fold a fourth of the egg whites into batter, then fold in remaining whites.

4 . Stage

Gently spoon into an ungreased 10-in. tube pan; smooth the top. Bake 50-55 minutes or cake springs back when lightly touched. Immediately invert the pan; cool completely.

5 . Stage

For blueberry topping, in a large saucepan, combine sugar, cornstarch and orange zest. Stir in orange juice until smooth. Bring to a boil; cook and stir for 2 minutes or until thickened. Remove from the heat. Stir in blueberries.

6 . Stage

For sour cream topping, in a large bowl, combine sour cream, confectioners' sugar and vanilla.

7 . Stage

Run a knife around side and center tube of pan. Remove cake to a serving plate; cut into slices. Serve with warm blueberry topping and the sour cream topping. Garnish with orange zest if desired.

8 . Stage

9 . Stage