Lightly sweetened Banana Blackberry Oatmeal Muffins make a simple, satisfying breakfast or snack. They are soft, moist, filled with juicy blackberries, and ready in about 30 minutes.
Banana muffins are always a helpful make-ahead option, especially when there are ripe bananas on the counter. This version adds old fashioned oats for a hearty texture and fresh blackberries for bright, fruity flavor. The muffins are not overly sweet, so they work well for breakfast, brunch, lunchboxes, or an easy afternoon snack.
If you love banana oatmeal recipes, these banana blackberry oat muffins are a great recipe to keep in your rotation. They take only a little longer than a bowl of oatmeal, but they are easy to bake ahead and freeze for later. The oats give the muffins a pleasant chew without needing nuts, while the bananas help keep the crumb tender and naturally flavorful.
Greek yogurt adds moisture and a little protein, but sour cream works beautifully too. Either option gives the batter enough richness and acidity to help create soft, fluffy muffins with a balanced flavor.
What To Expect
- Taste: These banana blackberry oatmeal muffins are lightly sweet, fruity, and hearty. Most of the flavor comes from ripe bananas, brown sugar, and juicy blackberries.
- Texture: The muffins are moist and tender with a soft crumb and a little chew from old fashioned oats.
- Ease: The batter is simple: mix the wet ingredients, add the dry ingredients, fold in the blackberries, and bake.
- Time: Plan on about 10 minutes to prepare and scoop the batter, plus 20 to 22 minutes in the oven.
🛒 Key Ingredients
- Bananas: Use overripe bananas with brown spots. Green or barely ripe bananas will not provide the same sweetness, moisture, or banana flavor.
- Blackberries: Fresh blackberries are preferred, but frozen blackberries can be used if they are fully thawed and well drained before adding them to the batter.
- Oats: Old fashioned rolled oats work best. Quick oats, instant oats, or steel cut oats can change the texture because they absorb liquid differently.
- Brown Sugar: Brown sugar keeps the muffins moist and adds a gentle caramel-like sweetness.
- Greek Yogurt: Plain Greek yogurt helps the muffins stay moist and adds a little acidity. Sour cream can be used as a substitute.
See the recipe card below for the full ingredient list and exact quantities.
✏️ Substitutions & Variations
- Blackberries: Swap the blackberries for blueberries, raspberries, or chopped strawberries.
- Greek Yogurt: Use sour cream in the same amount if preferred.
- Cinnamon: Add ½ teaspoon cinnamon for a warm, cozy flavor.
- Brown Sugar: White granulated sugar or coconut sugar may be used instead of brown sugar.
🧑🍳 Instructions
- Step 1. Mash 3 medium bananas, about 290 g, until smooth. You should have about 1¼ cups of mashed banana. A fork, potato masher, or immersion blender will all work.
- Step 2. In a mixing bowl, combine the mashed bananas, eggs, melted butter, milk, Greek yogurt or sour cream, and vanilla. Whisk for 1 to 2 minutes, until the mixture is smooth.
- Step 3. Add the brown sugar to the wet ingredients and whisk until the lumps are gone and the sugar is mostly dissolved.
- Step 4. Add the flour, oats, baking powder, and salt directly on top of the wet ingredients. Mix just until no dry flour pockets remain. Do not overmix, or the muffins may turn out dense or chewy.
- Step 5. Slice each blackberry into 2 or 3 pieces, then gently fold the berries into the muffin batter.
- Step 6. Scoop the batter into prepared muffin tins using a 3 or 4 tablespoon scoop, adding about ⅓ cup batter to each cup.
- Bake for 20 to 22 minutes, or until a toothpick inserted into the center comes out clean.
Note: Larger bananas or extra blackberries can add more moisture to the batter and may increase the baking time by 3 to 5 minutes.
📌 Top Tips & Hacks
- Measure the bananas. Bananas vary in size, so measuring helps keep the muffin batter consistent. You need about 1¼ cups, or 290 g, of mashed banana.
- Use old fashioned oats. They give the best baked texture for these banana oatmeal muffins.
- Drain frozen berries well. If using frozen blackberries, thaw and drain them first so the batter does not become too wet.
- Do not overmix. Once the flour and baking powder are added, stir only until combined. Gentle mixing keeps the muffins soft and tender.
❓Frequently Asked Questions
Yes, old fashioned rolled oats give the best texture in this recipe. Quick or instant oats can make the muffins softer and less defined, while steel cut oats are too thick and will not cook properly in the batter.
Yes. Strawberries, raspberries, or blueberries all work well. If the berries have been frozen, thaw and drain them completely before folding them into the batter.
This recipe has not been personally tested gluten-free, but you could try using gluten-free oats and a 1-to-1 gluten-free flour blend.
Room Temperature: up to 3 days.
Refrigerated: up to 5 days.
Frozen: up to 3 months.
🍌 More Delicious Banana Recipes
- Sourdough Discard Banana Bread
- Banana Nut Oatmeal
- Banana Bread Cinnamon Rolls
- Banana Coffee Cake
Did You Try This Recipe? Leave a star rating and a comment below the recipe card. Your feedback is helpful to other readers and always appreciated.
📝 Printable Recipe
Banana Blackberry Oatmeal Muffins
Ingredients
Wet Ingredients
- 3 medium bananas, about 1¼ cups mashed 290 g
- 2 large eggs 104 g
- ½ cup melted butter 113 g
- ½ cup milk 118 mL
- ½ cup plain Greek yogurt or sour cream 119 g
- 2 teaspoons vanilla
- ½ cup brown sugar 109 g
Dry Ingredients
- 2 cups all purpose flour 305 g
- 1½ cups old fashioned oats 145 g
- 1 tablespoon baking powder
- ½ teaspoon salt
- 8 ounces blackberries, about 2 heaping cups
Instructions
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Preheat the oven to 375℉. Line 2 muffin tins with paper liners or grease them with baking spray.
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Mash the bananas until smooth. You should have about 1¼ cups mashed banana.
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In a large mixing bowl, whisk together the mashed bananas, eggs, melted butter, milk, Greek yogurt or sour cream, and vanilla until smooth.
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Add the brown sugar and whisk until no large lumps remain.
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Add the flour, oats, baking powder, and salt. Stir just until combined and no dry flour pockets remain. Do not overmix.
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Slice the blackberries into 2 or 3 pieces each, then gently fold them into the batter.
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Scoop about ⅓ cup batter into each prepared muffin cup.
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Bake for 20 to 22 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
Notes
Note 2: If using frozen blackberries, thaw and drain them first to avoid adding too much liquid to the batter.
Store at room temperature: up to 3 days.
Refrigerate: up to 5 days.
Freeze: up to 3 months.
Nutrition
Carbohydrates: 28g
Protein: 4g
Fat: 7g
Sugar: 10g
Fiber: 2g
Hi, I’m Sara!
Registered Nurse by day, food blogger by weekend. Perfect dip tester and snack quester. I love short walks on the beach and long naps. Sharing my love for food, one bite at a time.