Spice Cake

Bahan-bahan (12 porsi)

• 1 tablespoon ground cinnamon
• 3/4 teaspoon ground cardamom
• 1/2 teaspoon ground allspice
• 1/2 teaspoon ground cloves
• 1/4 teaspoon ground nutmeg
• 16 tablespoons (2 sticks) butter, (at room temperature (divided))
• 2 1/4 cups all purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 2 large eggs, (at room temperature)
• 3 large egg yolks, (at room temperature)
• 1 teaspoon vanilla extract
• 1 3/4 cups granulated white sugar
• 2 tablespoons molasses
• 1 tablespoon grated fresh ginger
• 1 cup buttermilk, (at room temperature)
• 5 tablespoons butter (cut into pieces), (at room temperature)
• 1 1/4 cups powdered sugar
• 8 ounces cream cheese (cut into 4 pieces), (at room temperature)
• 1/2 teaspoon vanilla extract
• 3/4 cup coarsely chopped walnuts, (toasted)