香橙酸奶蛋糕

从Martha Stewart Living 杂志上看来的方子，简单，健康，好吃。做起来不费什么时间，从准备到烤完，大概35 分钟就好。

Orange-Yogurt Cake

Prep time: 10 min. Total time: 35 min.
makes one 8-inch round cake

Unsalted buter, softened, for pan
1 cup all-purpose flour, sifted
1/2 cup plus 3 tablespoons granulated sugar
1/2 teaspoon baking powder
1/8 teaspoon baking soda
Pinch of salt
1/2 cup plain whole-milk yogurt
1/4 vegetable oil
1 teaspoon grated orange zest, plus 1 tablespoon orange juice
1 large egg
1/2 teaspoon pure vanilla extract
2 large oranges (1 zested into thin strips, both segmented)
Confectioner's sugar, for dusting

1. Preheat oven to 350 F. Butter an 8-inch round cake pan. Stir flour, 1/2 cup plus 2 tablespoons sugar, the baking powder, baking soda, salt, yogurt, oil, orange zest and juice, egg, and vanilla in a bowl. Pour into pan. Bake until a cake tester comes out clean, about 25 minutes. Let cool on a wire rack.

2. Place zest strips in a bowl. Stir in segments and remaining tablespoon sugar. Garnish cake with some segments; serve with the rest. Dust with confectioner's sugar.