Blueberry Muffin in a Mug | Celebrateyourplate

Ingredients

• 1/4 cup whole wheat flour
• 1 tablespoon brown sugar
• 1/4 teaspoon baking powder
• 1/8 teaspoon salt
• 1 pinch ground cinnamon
• 1/2 tablespoon butter
• 3 tablespoons low-fat milk
• 3 to 4 tablespoons (fresh or thawed frozen) blueberries, plus 1/2 cup additional berries for serving