Ingredients

• 4 large eggs, separated
• 1 pint buttermilk, shaken vigorously
• 1 cup canned solid-pack pumpkin
• 6 tablespoons unsalted butter, melted
• 2 ½ cups all-purpose flour
• ⅓ cup packed light brown sugar
• 2 ¼ teaspoons baking powder
• 2 teaspoons ground cinnamon
• 1 teaspoon baking soda
• 1 teaspoon ground ginger
• ½ teaspoon salt
• ¼ teaspoon ground cloves
• cooking spray