Ginger Apple Torte

Name: Ginger Apple Torte
Ingredients: 3 large apples (I used Honeycrisp and Fuji.); 4 tablespoons turbinado sugar, divided; 1/2 cup (1 stick) unsalted butter + ~2 TB butter + more for pan; 1 1/2 cups all purpose flour; 1/2 teaspoon baking soda; 1/4 teaspoon kosher salt; 1 teaspoon cinnamon; 1/2 teaspoon ground cloves; 1/2 teaspoon ground allspice; 1 teaspoon ground ginger (if you want more of a gingery kick; optional); 3/4 cup brown sugar; 2 large eggs; 1 tablespoon lemon zest; 1 tablespoon grated fresh ginger (I peeled a 2 inch piece and grated it with a microplane grater); 1 tablespoon molasses; 3 tablespoons dark rum; 1 teaspoon vanilla extract; 1/4 cup milk; 1/2 cup plain Greek yogurt; 10 walnut halves