1 cup (200 grams) granulated sugar½ cup (113 grams) unsalted butter, melted2 large eggs (100 grams)2 tablespoons (6 grams) orange zest2 teaspoons (8 grams) vanilla extract1½ cups (188 grams) all-purpose flour1½ teaspoons (7.5 grams) baking powder1 teaspoon (2 grams) ground cinnamon½ teaspoon (1.5 grams) kosher salt½ teaspoon (1 gram) ground allspice½ teaspoon (1 gram) ground cloves½ teaspoon (1 gram) ground star anise½ cup (120 grams) sour cream¼ cup (60 grams) whole milk1¼ cups (155 grams) chopped Pink Lady apples, dividedPecan Streusel (recipe follows)Caramel Sauce (recipe follows)
Preheat oven to 350°F (180°C). Spray a 9-inch springform pan with baking spray with flour.
In a medium bowl, whisk together sugar, melted butter, eggs, orange zest, and vanilla.
In another medium bowl, whisk together flour, baking powder, cinnamon, salt, allspice, cloves, and star anise. Whisk flour mixture into butter mixture. Add sour cream and milk, whisking just until combined. Fold in 1 cup (124 grams) apples. Pour into prepared pan, smoothing with an offset spatula. Top with remaining ¼ cup (31 grams) apples; sprinkle with Pecan Streusel.
Bake until a wooden pick inserted in center comes out clean, 40 to 45 minutes. Let cool in pan for 15 minutes. Remove from pan, and drizzle with Caramel Sauce. Serve warm or at room temperature.