Sweet Potato Casserole

Ingredients (11)

• 4 pounds sweet potatoes (about 5 large), peeled and cubed
• 1 cup 2% milk
• 1/2 cup packed brown sugar
• 6 tablespoons butter, softened
• 1 large egg, lightly beaten
• 1-1/2 teaspoons ground cinnamon
• 1-1/2 teaspoons vanilla extract
• 3/4 teaspoon ground allspice
• 1/2 teaspoon salt
• 1/4 teaspoon ground nutmeg
• 18 large marshmallows