Name: Banana Blueberry Oatmeal Muffins Recipe
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: American
Ingredients: 1 cup all purpose flour (plus 1 tbsp to coat the blueberries); 1½ cups old fashioned rolled oats; ½ cup light brown sugar (packed); 1½ tsp baking powder; 1 tsp baking soda; 1 tsp ground cinnamon; ½ tsp salt; ½ cup buttermilk; 1 egg (room temperature); ⅓ cup oil (canola, vegetable, coconut, or avocado); 1 tsp pure vanilla extract; 1 cup mashed bananas (about 3 medium ripe bananas); 1 cup fresh blueberries; ¼ cup old-fashioned rolled oats; 3 tbsp all-purpose flour; 3 tbsp light brown sugar (packed); ½ tsp ground cinnamon; Pinch of salt; 2 tbsp unsalted butter (room temperature)

Print Recipe· 4.1 from 2 reviews

If you have a soft spot for breakfast treats that combine wholesome ingredients with bursts of fruit, you are going to love this Banana Blueberry Oatmeal Muffins Recipe. These muffins marry the natural sweetness of ripe bananas and juicy blueberries with the hearty texture of oats, resulting in a perfect on-the-go snack or a cozy morning indulgence. They are incredibly moist, subtly spiced with cinnamon, and topped with a sweet, crumbly streusel that adds a delightful crunch every time you take a bite. Trust me, once you try these, they will quickly become a favorite in your baking rotation.

Ingredients You’ll Need

A top-down view of various baking ingredients is shown arranged neatly on a white marbled surface. A large white round bowl on the top left contains rolled oats on the left side and all-purpose flour on the right side, both with a rough texture and soft beige and white colors. To the right of this bowl, there is a small white bowl filled with dark blue blueberries. Below that, three ripe bananas with brown spots lie side by side. Several small wooden bowls hold golden oil, light brown sugar with a crumbly texture, and a pale yellow block of unsalted butter. Two small blue bowls contain white baking soda and baking powder powders, while a small yellow bowl has salt crystals. A glass jar with white buttermilk, a small brown bowl with ground cinnamon powder, a small green bowl with dark brown pure vanilla extract, and a brown bowl with a single brown egg complete the circle of ingredients. All items are spaced with visible white marble in the background. Photo taken with an iphone --ar 4:5 --v 7

This Banana Blueberry Oatmeal Muffins Recipe calls for simple, everyday ingredients that come together in a way that’s anything but ordinary. Each item plays an essential role—oats bring heartiness and texture, bananas add natural moisture and sweetness, and blueberries give fresh, juicy pops of flavor. The combination of spices and streusel topping rounds everything out with just the right balance.

All-purpose flour: Provides structure to the muffins and is also used to coat blueberries to prevent sinking.
Old-fashioned rolled oats: Adds chewy texture and wholesome goodness.
Light brown sugar: Enhances the sweetness with a subtle molasses note.
Baking powder and baking soda: Essential leavening agents that ensure your muffins rise beautifully.
Ground cinnamon: Adds a warm, inviting spice that complements both bananas and blueberries.
Salt: Balances the flavors perfectly.
Buttermilk: Creates a tender crumb and adds a slight tang.
Egg: Binds everything together for a fluffy texture.
Oil (canola, vegetable, coconut, or avocado): Keeps the muffins moist without weighing them down.
Pure vanilla extract: Enhances the overall flavor with a sweet aroma.
Mashed bananas: The star ingredient, contributing natural sweetness and moisture.
Fresh blueberries: Fresh bursts of juicy, tart-sweet flavor throughout the muffins.
Additional oats, flour, brown sugar, cinnamon, salt, and butter: For the irresistible streusel topping that adds texture and sweetness.

How to Make Banana Blueberry Oatmeal Muffins Recipe

Step 1: Preheat and Prepare

Start by preheating your oven to 375°F and line a 12-cup muffin pan with liners. This will make cleanup easier and keep your muffins perfectly shaped.

Step 2: Toss the Blueberries

Lightly tossing the blueberries in a tablespoon of flour ensures they stay suspended in the batter instead of sinking to the bottom during baking. This little step makes a big difference so every bite has a burst of blueberry goodness.

Step 3: Mix the Dry Ingredients

Combine the rolled oats, flour, baking powder, baking soda, salt, cinnamon, and brown sugar in a large bowl. This creates the flavorful base that supports the bananas and blueberries.

Step 4: Combine the Wet Ingredients

In a separate bowl, whisk together the egg, vanilla extract, and oil. Then add the buttermilk to this mixture. These ingredients add moisture and richness that make the muffins tender.

Step 5: Bring the Batter Together

Add the wet mixture into the dry ingredients and stir just until combined. Overmixing can lead to tough muffins, so gentle folding is key.

Step 6: Add Bananas and Blueberries

Fold in the mashed bananas and the floured blueberries carefully. These fresh ingredients infuse the batter with natural sweetness and tart bursts.

Step 7: Divide the Batter

Spoon the batter evenly into the prepared muffin cups, filling each about three-quarters full to ensure a nice dome without spilling over.

Step 8: Make and Add Streusel Topping

Mix oats, flour, brown sugar, cinnamon, and salt for the streusel in a bowl, then cut in the butter until you form coarse crumbs. Sprinkle this over each muffin generously for that crunchy, sugary finish.

Step 9: Bake

Bake for 18-20 minutes, or until a toothpick inserted in the center comes out clean. The muffins should be golden on top with that irresistible crumbly streusel.

How to Serve Banana Blueberry Oatmeal Muffins Recipe

A dark gray metal muffin tray holds twelve white paper liners filled with light brown muffin batter that has small dark spots inside, likely blueberries. Each muffin is topped with a golden crumbly oat streusel with visible oats and small chunks, spread unevenly across the surface. The tray rests on a soft white marbled textured surface with a pink and white checkered cloth partially visible on the left side photo taken with an iphone --ar 4:5 --v 7

Garnishes

Top your muffins with a light drizzle of honey or a dusting of powdered sugar for an added touch of sweetness and elegance. A dollop of Greek yogurt or cream cheese spread also complements the flavors beautifully and adds creaminess.

Side Dishes

Serve these muffins alongside a fresh fruit salad or a simple green smoothie for a balanced, nourishing breakfast. They also pair wonderfully with a hot cup of coffee or tea for a cozy morning treat.

Creative Ways to Present

For a brunch table, arrange muffins on a tiered stand with fresh blueberries scattered around for color and freshness. You can also slice them in half and toast lightly to add a bit of crunch, then slather with nut butter for a decadent twist.

Make Ahead and Storage

Storing Leftovers

Once completely cooled, store the muffins in an airtight container at room temperature for up to three days. This keeps them moist and fresh without drying out.

Freezing

These muffins freeze wonderfully. Wrap each one individually in plastic wrap and place in a freezer-safe bag for up to three months. When you’re ready, thaw overnight in the fridge or at room temperature.

Reheating

Warm your muffins in the microwave for 20-30 seconds or pop them in a toaster oven for a few minutes. You’ll regain that fresh-baked warmth and soft texture as if they just came out of the oven.

FAQs

Can I use frozen blueberries for this Banana Blueberry Oatmeal Muffins Recipe?

Yes, you can substitute frozen blueberries, but be sure not to thaw them beforehand and toss with flour as you would with fresh blueberries to prevent color bleed and excessive moisture.

What can I substitute for buttermilk if I don’t have any?

You can easily make a buttermilk substitute by adding one tablespoon of lemon juice or white vinegar to a cup of milk and letting it sit for 5 minutes. This adds the necessary acidity to react with the baking soda.

Are these muffins gluten-free?

The classic recipe uses all-purpose flour which contains gluten, but you can experiment with gluten-free all-purpose flour blends. Just note that texture might vary slightly.

How ripe should the bananas be for the best flavor?

Use bananas that are heavily spotted or even brown. The riper, the sweeter and more flavorful they become, providing the perfect taste and moisture for the muffins.

Can I make this Banana Blueberry Oatmeal Muffins Recipe vegan?

Yes, by substituting the egg with a flax or chia egg and using plant-based milk and vegan butter, you can make a delicious vegan version of these muffins that still holds together beautifully.

Final Thoughts

If you’re searching for a breakfast or snack that feels like a warm hug in muffin form, this Banana Blueberry Oatmeal Muffins Recipe is your new best friend. It’s easy to make, full of natural sweetness, and has that wonderful mix of textures and flavors that keep you coming back for more. Give it a try—you won’t regret it!