Description
Enjoy a warm, fluffy, cinnamon-spiced oatmeal muffin in just 2 minutes! This easy Sugar-Free Oatmeal Muffin in a Mug is made with wholesome instant oats, naturally sweet ripe banana, chia seeds, and vanilla. Prepared in a single microwave-safe mug, this quick breakfast is packed with fiber, requires minimal cleanup, and contains no added sugar when made without optional sweetener or sugary toppings. Perfect for busy mornings, healthy snacks, or whenever you crave a cozy homemade treat!
Ingredients
Scale
Mug Muffin Batter:
- ½ very ripe medium banana, mashed
- 1 large egg
- 1 tablespoon milk (dairy or unsweetened almond milk)
- 1 teaspoon vanilla extract
- 1 teaspoon chia seeds
- ½ teaspoon baking powder
- ⅓ cup instant oats
- ½ teaspoon ground cinnamon
- 1 pinch salt
- 1 teaspoon granulated allulose or monk fruit sweetener (optional)
Topping & Garnish:
- Fresh blueberries or raspberries, as desired
- Sugar-free dark chocolate chips, optional
- Almond butter, optional
Instructions
- Prepare the Mug: Choose a microwave-safe mug with a capacity of at least 8–10 ounces to allow room for the muffin to rise.
- Mash the Banana: Add the ripe banana directly into the mug and mash thoroughly with a fork until smooth.
- Add Wet Ingredients: Mix in the egg, milk, and vanilla extract until well combined.
- Add Dry Ingredients: Stir in the chia seeds, instant oats, baking powder, cinnamon, salt, and optional sugar-free sweetener.
- Mix the Batter: Stir everything with a fork until a smooth, evenly combined batter forms.
- Microwave: Cook on high for 1 minute 30 seconds to 2 minutes, depending on your microwave wattage. Begin checking at 90 seconds. The muffin should be puffed and cooked through in the center.
- Cool Slightly: Carefully remove the mug from the microwave and allow the muffin to rest for 1 minute.
- Garnish and Serve: Add fresh berries, sugar-free chocolate chips, or a drizzle of almond butter. Enjoy warm directly from the mug!
Notes
- Choose a ripe banana: A spotty, very ripe banana provides the best natural sweetness and moisture.
- Avoid overcooking: Microwave cooking times vary. Start checking at 90 seconds to prevent a dry, rubbery texture.
- Use the right mug: An 8–10-ounce or larger microwave-safe mug helps prevent overflowing.
- Rolled oats substitution: Pulse old-fashioned rolled oats in a blender before using for a smoother texture.
- Egg-free option: Replace the egg with 1 tablespoon ground flaxseed mixed with 2½ tablespoons water. Let stand for 5 minutes before adding. The muffin may be denser.
- Make-ahead tip: Pre-mix the oats, chia seeds, baking powder, cinnamon, and salt in a small container for quicker preparation.
- Serving suggestion: Enjoy with fresh berries, almond butter, or unsweetened Greek yogurt.
- Storage: Best enjoyed immediately while warm and fluffy.
- Prep Time: 1 minute
- Cook Time: 2 minutes
- Category: Dessert
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 260 kcal
- Fat: 9 g
- Carbohydrates: 33 g
- Fiber: 5 g
- Protein: 12 g