Pecan Candy Cheesecake

Name: Pecan Candy Cheesecake
Cuisine: American, Southern
Ingredients: 1⁄3 cup pecans, roughly chopped; ¾ cup (90g) all-purpose flour; ½ teaspoon baking powder; ¼ teaspoon kosher salt; ½ cup (100g) packed light or dark brown sugar; 6 tablespoons (85g) unsalted butter, melted; 2 (8-ounce) packages cream cheese, room temperature; 1 cup (200g) granulated sugar; 3 large eggs, at room temperature; 1⁄3 cup (80ml) heavy cream, room temperature; 1⁄3 cup (80ml) sour cream, room temperature; 1 tablespoon vanilla extract; Zest of 1 lemon; Juice of ¼ lemon; Vanilla Whipped Cream, for serving (see below; optional); Berries, caramel, or toasted pecans, for serving (optional); 1 cup (240ml) heavy cream; 2 tablespoons (15g) confectioners’ sugar; 1 teaspoon vanilla extra