Ginger Apple Torte

INGREDIENTS

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