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.