Sweet and Spiced Snickerdoodle Muffins

Ingredients

• 5 tablespoons butter, softened
• 1/2 cup sugar
• 1 large egg, room temperature
• 1/2 cup 2% milk
• 1-1/2 cups all-purpose flour
• 2-1/4 teaspoons baking powder
• 1/4 teaspoon salt
• 1/4 teaspoon ground nutmeg
• COATING:
• 1/3 cup butter, melted
• 2/3 cup cinnamon sugar