I Want S'more Muffins

Ingredients (14)

• 3 tablespoons butter, softened
• 1/4 cup packed brown sugar
• 4 teaspoons sugar
• 1 large egg
• 1/3 cup sour cream
• 3 tablespoons 2% milk
• 2/3 cup all-purpose flour
• 1/2 cup graham cracker crumbs
• 1/4 teaspoon salt
• 1/4 teaspoon baking powder
• 1/4 teaspoon ground cinnamon
• 1/8 teaspoon baking soda
• 1/3 cup milk chocolate chips
• 6 tablespoons marshmallow creme