1-Minute Blueberry Mug Muffin Recipe

Craving a muffin but watching carbs? Try this healthy muffin-in-a-mug—an easy, high-fiber breakfast made in the microwave with simple ingredients like ground flaxseed and an egg.

I’ve always loved muffins, but typical recipes rely on sugar and white flour. This blueberry muffin-in-a-mug is quick, low in carbs, high in fiber, and made in a single large mug—so cleanup is minimal.

You only need six basic ingredients and one minute of cooking time. The recipe is flexible: swap in different add-ins to keep the flavor fresh. It works as breakfast, a snack, or a light dessert, and it’s naturally gluten-free, dairy-free, and keto-friendly. If you want to reduce carbs further, skip the fruit and use nuts or seeds instead.

Mug Muffin Ingredients

These simple, nutritious ingredients form the base of the recipe.

• Flaxseed Meal: Used instead of all-purpose flour, ground flaxseed gives structure and provides fiber and heart-healthy fats with very few net carbs.
• Baking Powder: Adds lift for a light, fluffy texture.
• Stevia Powder: A small amount for sweetness; omit if you prefer savory muffins.
• Cinnamon: Complements fruit nicely. Try nutmeg, ginger, pumpkin spice, or a splash of vanilla. For savory versions, use herbs like dill, chives, or Italian seasoning.
• Egg: Adds structure and protein.
• Olive Oil: A teaspoon keeps the muffin moist; coconut oil or melted butter also work.
• Blueberries & Walnuts: Fresh or frozen blueberries and chopped walnuts are our favorite add-ins, but you can customize with other fruits, nuts, seeds, or savory ingredients.

Healthy Muffin-in-a-Mug Variations

Add fruit: Fresh or frozen blueberries, raspberries, strawberries, chopped apples or pears, and sliced banana all work well.

Add nuts or nut butter: Add crunch with walnuts, pecans, hazelnuts, pistachios, or peanuts. Serve with a smear of peanut or almond butter if you like.

Add chocolate chips: A few dark chocolate chips turn this into a sweeter treat.

Make it savory: Omit the sweetener and cinnamon and add shredded cheese, chopped vegetables, and savory herbs for a muffin that pairs well with salads or soups.

How to Make a Blueberry Mug Muffin

Follow these quick steps to make a single serving in minutes.

If you’re new to mug muffins, it’s very simple.

Microwave: Combine all ingredients in a microwave-safe mug and stir thoroughly. Microwave on high for 1 minute, or until set and fluffy. If using juicy fresh or frozen fruit, microwave about 1 minute 30 seconds. Microwaves vary, so total time may be up to 1½ minutes.

Oven: If you prefer baking, preheat the oven to 350°F (175°C). Bake in an oven-safe mug for slightly longer, or divide the batter between a muffin tin for 12–15 minutes until a toothpick comes out clean.

Serve: Turn the warm muffin out onto a plate and top with extra blueberries, plain Greek yogurt, and chopped nuts if desired. Let it cool a minute before eating.

Vegan Substitute for Eggs

If you want to make this vegan or are out of eggs, use one of these substitutes. A flax “egg” is a common choice: mix 1 tablespoon ground flaxseed with 3 tablespoons water and let it thicken. Because this recipe already uses flax meal, you might prefer 1/2 mashed banana, 1/4 cup applesauce, or 1/4 cup dairy-free yogurt as alternatives for moisture and binding.