Plum Kuchen: 2000s Recipes + Menus : gourmet.com

Ingredients

• 1 (1/4-ounce) package active dry yeast
• 1/4 cup warm water (105–110°F)
• 2 cups plus 2 tablespoons all-purpose flour, divided
• 1 cup sugar, divided
• 1/2 teaspoon salt
• 1/2 cup plain whole-milk yogurt (preferably Greek-style) at room temperature
• 1 large egg, warmed in shell in warm water 5 minutes
• 1 1/2 teaspoons grated lemon zest
• 1 teaspoon pure vanilla extract
• 1 1/4 sticks unsalted butter, cut into tablespoons and softened, divided
• 3/4 lb firm-ripe plums (about 4 small), halved and pitted