Maple-Pecan Sweet Potatoes

INGREDIENTS

• 2 3/4 pounds sweet potatoes
• 1/4 cup half-and-half
• 3 tablespoons butter, melted
• 3 tablespoons maple syrup
• 1 teaspoon kosher salt
• 1/2 teaspoon freshly ground black pepper
• 1/4 teaspoon vanilla extract
• 1/4 teaspoon ground cinnamon
• 1/8 teaspoon ground allspice
• 1 large egg, lightly beaten
• Cooking spray
• 1/2 cup mini-marshmallows
• 2 tablespoons chopped pecans