Healthy Banana Oatmeal Muffins
Healthy Banana Oatmeal Muffins are a wholesome, versatile option for breakfast or snack time. The combination of ripe banana, oats, and a gentle touch of spice delivers comforting flavor with plenty of nutrition. They're naturally sweet, easy to customize, and come together in one bowl for quick week-starts or weekend meal prep.
Prep Time 10 minutes mins
Cook Time 20 minutes mins
Total Time 30 minutes mins
Course Breakfast, Snack
Cuisine American
Servings 12 muffins
Calories 135 kcal
For the Wet Ingredients
- 2-3 very ripe bananas mashed (about 1 cup)
- 1 large egg (or 1 flaxseed egg: 1 tbsp ground flax + 3 tbsp water, rested 5 mins)
- 1/4 cup milk dairy or non dairy
- 1 teaspoon vanilla extract
For the Dry Ingredients
- 2 cups rolled oats
- 1/2 cup all-purpose flour or whole-wheat flour
- 1 teaspoon baking powder
- 1/2 teaspoon baking soda
- 1/4 teaspoon fine salt
- 1/2 teaspoon ground cinnamon
Optional Mix-Ins
- 1/2 cup fresh or frozen blueberries
- 1/4 cup chopped walnuts or pecans
- 2 tbsp chia seeds or hemp hearts
- 1/4 cup dark chocolate chips
Step 1: Prep and Mash
Preheat your oven to 350°F (175°C) and line a standard 12-cup muffin pan with paper liners or grease lightly with cooking spray. The riper your bananas, the sweeter and more flavorful your muffins will be — look for deeply speckled or almost fully black peels for the best result. In a large bowl, mash the bananas well with a fork until smooth with only small lumps remaining.
Step 2: Mix the Wet Ingredients
Whisk the egg, milk, and vanilla extract into the mashed banana until the mixture is smooth and evenly combined. If using a flaxseed egg, make sure it has had time to gel before adding — it should look slightly thick and gelatinous.
Step 3: Combine the Dry Ingredients
In a separate bowl, stir together the rolled oats, flour (if using), baking powder, baking soda, salt, and cinnamon until evenly mixed. Using a separate bowl prevents overmixing once the wet and dry come together, which keeps the muffins tender rather than dense.
Step 4: Bring the Batter Together
Fold the dry ingredients into the wet mixture with a spatula, stirring just until no dry streaks remain — a few lumps are perfectly fine. Overmixing at this stage will make the muffins tough. Gently fold in any mix-ins of your choice, being careful not to crush blueberries if using. The batter will be thick and hearty.
Step 5: Bake
Divide the batter evenly among the 12 prepared muffin cups, filling each about three-quarters full. Add any toppings — a few extra blueberries, a banana slice, or a pinch of oats and cinnamon — pressed lightly onto the surface. Bake for 18–22 minutes, until the tops are golden and a toothpick inserted into the center comes out clean. Let the muffins cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.