Moist Banana Blueberry Oatmeal Muffins

Banana Blueberry Oatmeal Muffins are a tasty, wholesome breakfast or snack. These bakery-style muffins are light and fluffy inside, bursting with sweet banana and juicy blueberries, and they develop a slightly crisp exterior. They’re simple to make, family-friendly, and a great way to use overripe bananas.

This is a one-bowl muffin recipe that relies on mashed ripe bananas and sour cream (or yogurt) to keep the crumb moist. You can bake them in standard or jumbo sizes, and they freeze well for make-ahead breakfasts. To reheat, simply microwave from frozen for a few seconds for a quick breakfast or snack.

If you enjoy oat-based baking, try other oat treats like Peanut Butter and Jelly Bars or Peanut Butter Banana Oatmeal Bars for more ideas.

For more muffin recipes, try titles such as:

• Easy Jumbo Blueberry Muffins (Bakery Style)
• Classic All Bran Muffins with Buttermilk
• Butter Rum Muffins
• Bakery Style Pistachio Muffins
• Cinnamon Apple Crumble Muffins with Oats
• Fluffy Bakery Style Banana Muffins

Why You’ll Love This Recipe

Moist, tender texture. Mashed bananas, sour cream or yogurt, and a bit of oil keep these muffins exceptionally moist. The fresh or frozen blueberries add bursts of juiciness that help prevent dryness. Ground oats mixed with the flour contribute a pleasant texture and nutty flavor.

Breakfast-ready flavors. This recipe combines the best of banana and oatmeal for a satisfying morning treat. The oats add substance beyond a typical muffin, while the bananas and blueberries give a bright, fruity taste.

One-bowl convenience. Minimal equipment and easy cleanup make this ideal for busy mornings. With straightforward ingredients and a simple mixing method, you’ll have muffins ready with very little fuss.

Ingredients

• Rolled oats. Some are blended into a fine powder and mixed into the dry ingredients; the remainder are used on top for texture.
• Bananas. Use very ripe, spotted, or even brown bananas for the best sweetness and moisture.
• Blueberries. Fresh or frozen blueberries work well. If using frozen berries, there’s no need to thaw them first.
• Butter. Unsalted butter adds flavor; it is melted and cooled before use.
• Vegetable oil. A neutral oil (canola or sunflower) adds moisture and keeps the muffins tender.
• Sour cream or Greek yogurt. Use room-temperature full-fat sour cream or yogurt (or buttermilk) for richness.

See the recipe card below for exact measurements and the full ingredient list.

Substitutions and Variations

• Swap blueberries for blackberries or dried cranberries if you prefer.
• Quick oats can be used in place of rolled oats, though texture will differ slightly.
• Replace the egg with 1/4 cup unsweetened applesauce for an egg-free option.
• If using frozen blueberries, toss them with the flour and fold them into the batter straight from the freezer to prevent bleeding.

How to Make This Recipe

Expert Tips

• Toss the berries in flour so they don’t sink while baking.
• Keep some banana chunks for added texture — they soften during baking and lend moisture.
• Mix gently. Over-mixing develops gluten and makes muffins tough; it’s fine if the batter is slightly lumpy.
• Rest the batter 15 minutes before baking to help produce taller tops.
• For taller tops, alternate which cups you fill and bake using two pans to promote even rising.
• Use very ripe bananas (spotted or brown) for the best sweetness and moisture.

Recipe FAQs

Storage

Store the muffins in a lightly covered container at room temperature for 3–4 days. Because these muffins are moist, allow a bit of airflow to prevent them from becoming soggy.

To freeze: place cooled muffins in a sealed container or zip-top bag and freeze for up to two months. Thaw uncovered at room temperature or microwave a frozen muffin for 20–30 seconds to warm.

More Sweet Breakfast Recipes You’ll Love

Banana Blueberry Oatmeal Muffins

Equipment

• 12-hole muffin tin
• Cupcake liners (optional)
• Large mixing bowl
• Whisk
• Rubber spatula

Ingredients

• ¾ cup rolled oats (½ cup to pulverize, ¼ cup reserved whole)
• 3–4 medium very ripe bananas, mashed
• 1 cup all-purpose flour
• 1 teaspoon baking soda
• 1½ teaspoons baking powder
• ¼ teaspoon kosher salt
• ½ teaspoon ground cinnamon
• ½ cup granulated sugar
• ¼ cup packed light brown sugar
• 6 tablespoons unsalted butter, melted and cooled
• ¼ cup vegetable oil
• 1 teaspoon vanilla paste or extract
• 1 large egg, room temperature
• ¼ cup sour cream (or Greek yogurt), room temperature
• 1 cup blueberries, fresh or frozen
• 2 tablespoons all-purpose flour (to toss with the blueberries)

Instructions

1. Preheat oven to 425°F and line a 12-cup muffin tin with liners.
2. Grind ½ cup of the oats into a fine powder to make oat flour. Reserve the remaining ¼ cup whole oats for topping.
3. Peel and mash the bananas, leaving some small chunks.
4. Whisk together the oat flour, all-purpose flour, baking soda, baking powder, salt, and cinnamon.
5. In a separate large bowl, whisk the granulated and brown sugar with melted butter, oil, vanilla, egg, and sour cream until combined. Fold in the mashed bananas.
6. Gently fold the dry ingredients into the wet ingredients until just combined; avoid over-mixing.
7. Spoon about 1 tablespoon of batter into the bottom of each liner and tap the pan to coat the bottoms (this helps prevent blueberries from sinking).
8. Toss the blueberries with 2 tablespoons flour, then fold them into the batter carefully.
9. Divide the batter evenly among the liners, filling each to the top. Sprinkle the remaining oats on top.
10. Bake at 425°F for 5 minutes, then reduce the oven temperature to 400°F and bake an additional 13–16 minutes, or until a toothpick inserted into the center comes out clean.
11. Cool in the pan briefly, then transfer muffins to a wire rack to finish cooling.

Notes

Nutrition (per muffin)