Brown Sugar Apple Upside Down Cake with Apple Cider Caramel and Spiced Walnuts

INGREDIENTS

• 1 1/3 cup dark brown sugar
• 1/2 teaspoon nutmeg
• 1/2 cup whole milk
• 1 tablespoon butter
• 2 Honeycrisp Apples, very thinly sliced (1/8" thick)
• 1/4 cup heavy cream
• 1 cup walnuts, roughly chopped
• 1/2 teaspoon baking soda
• 3/4 teaspoons salt
• 2 cups all purpose flour
• 1 teaspoon cinnamon
• 5 ounces butter
• 1/4 teaspoon cloves
• 1/2 teaspoon salt
• 2 eggs
• 1 quart apple cider
• 1 tablespoon vanilla extract
• 1/2 teaspoon baking powder