One-Bowl Banana Blueberry Muffins
These banana blueberry muffins are the reason I never feel bad about the two overripe bananas sitting on my counter. In about half an hour you go from spotting brown fruit to pulling a tray of domed, tender muffins out of the oven.
The whole thing happens in one bowl with a fork and a spoon. No mixer, no creaming butter, and the blueberries can go in straight from the freezer. They come out soft, moist, and packed with jammy pockets of fruit.
Why These Muffins Work
Banana and blueberry belong together. The mashed banana gives the crumb a soft, almost creamy texture without needing much butter, and the blueberries pop with a little tartness that cuts through the sweetness. I love that frozen berries work just as well as fresh, so this recipe is always in reach.
I use oil instead of melted butter, which keeps the muffins moist well into the next day. The batter is thick and forgiving, and the whole thing stirs together while the oven preheats. It is the recipe I turn to when I want something dependable that feels a little special.
Ingredients
- 1 ½ cups all-purpose flour: spooned and leveled, not scooped, for a light crumb
- 1 tsp baking powder
- ½ tsp baking soda
- ½ tsp fine salt
- ¾ cup granulated sugar: or use packed light brown sugar for a deeper caramel note
- ½ cup neutral oil: canola, vegetable, or light olive oil
- 2 large eggs: at room temperature if you remember, cold is fine
- 1 tsp vanilla extract
- 1 cup mashed ripe banana: about 3 medium bananas, spotted and soft
- 1 cup blueberries: fresh or frozen; if frozen, do not thaw
Variations / Substitutions
- Swap the berries: raspberries, chopped strawberries, or blackberries all work. Adjust the fold gently so the fruit holds its shape.
- Add a little crunch: stir in ½ cup chopped walnuts or pecans with the blueberries.
- Use whole wheat: replace up to half the all-purpose flour with whole wheat for a nuttier, denser muffin.
- Make it citrus: add 1 tsp finely grated lemon or orange zest to the wet mix for a bright lift.
- Go dairy free: the recipe is already dairy free since it uses oil. No swap needed.
Blueberry Overnight Oats go perfectly with these muffins for an easy brunch spread.
How to Make One-Bowl Banana Blueberry Muffins
Step 1: Mash the Bananas
Heat your oven to 375°F (190°C) and line a 12-cup muffin tin with paper liners or grease it well. In a large bowl, mash the 3 bananas with a fork until they are mostly smooth with a few tiny lumps. You want about 1 cup total after mashing.
The bananas turn into a glossy, thick paste that will carry all the moisture in the batter. If your bananas are not fully speckled yet, see the tips section below for how to speed things along.
Step 2: Add the Dry Ingredients
To the same bowl, add the ¾ cup sugar, ½ cup oil, 2 eggs, and 1 tsp vanilla. Whisk until the mixture is smooth and the sugar looks dissolved, about 30 seconds. Sprinkle the 1 ½ cups flour, 1 tsp baking powder, ½ tsp baking soda, and ½ tsp salt over the wet ingredients.
Switch to a spatula or wooden spoon and fold everything together just until no dry streaks remain. The batter will be thick and a little lumpy, which is exactly what you want. A few small pockets of flour are fine. Overmixing at this point makes the muffins tough.
Step 3: Fold in the Blueberries
Scatter the 1 cup blueberries over the batter and fold them in gently with the spatula. Give it only about 4 or 5 folds so the berries stay whole. The batter will look streaky with blue juice here and there, and that is a good sign.
If you are using frozen berries, work quickly and do not thaw them first. They may tint the batter a little purple, but the muffins will bake up with distinct, juicy pockets.
Step 4: Divide and Bake
Scoop the batter into the prepared muffin tin, filling each cup about three-quarters full. An ice cream scoop makes this neat and even. Slide the pan into the oven and bake for 18 to 22 minutes, rotating the pan halfway through.
The muffins are done when the tops spring back lightly when you press them and a toothpick inserted in the center comes out clean or with a few moist crumbs. The edges will pull away from the sides of the pan, and the domes will be golden with deep blue-purple spots.
Step 5: Cool and Serve
Let the muffins sit in the pan on a rack for 5 minutes so they firm up enough to lift out. Then transfer them to the wire rack to cool completely, or serve them warm right away. A warm muffin with a pat of butter is hard to beat.
They come out of the pan with tall, cracked tops and a tender, moist crumb. The banana flavor mellows into a gentle sweetness, and each bite has a bright pop of blueberry.
Tips for Tall, Tender Muffins
- Banana readiness matters: The peel should be mostly brown and speckled. If your bananas are still yellow, you can bake them unpeeled at 300°F (150°C) for 15 to 20 minutes until the skin darkens, then cool and mash.
- Toss fresh berries in flour: If you are using fresh blueberries, toss them with a teaspoon of the measured flour before folding them in. This helps keep them from sinking straight to the bottom.
- Fill empty cups with water: If your muffin tin has a few empty spots, pour a little water into the unused cups. This helps the pan heat evenly and prevents warping.
- Cool before storing: Store muffins only after they are completely cool, otherwise steam will make the tops sticky and the crumb gummy.
Bake times by pan size:
| Pan Type | Bake Time |
|---|---|
| Standard 12-cup | 18 to 22 minutes |
| Jumbo 6-cup | 25 to 30 minutes |
| Mini 24-cup | 10 to 12 minutes |
Storing Leftover Muffins
- Refrigerate: Muffins stay fresh in an airtight container at room temperature for up to 2 days, or in the fridge for up to 5 days. The fridge dries them out a little, so bring them to room temp or warm them before eating.
- Reheating: A quick 15 to 20 seconds in the microwave revives the soft texture, or wrap in foil and warm at 300°F (150°C) for 5 minutes.
- Freeze: Wrap each muffin individually and freeze for up to 3 months. Thaw on the counter or microwave straight from frozen for about 30 seconds.
Frequently Asked Questions
Can I use frozen bananas?
Yes. Thaw them completely and drain off any extra liquid before mashing, then use the same 1 cup amount. The muffins may be a little denser but will still taste great.
Can I make these muffins gluten free?
Yes. Substitute the flour with a good 1 to 1 gluten free baking blend that contains xanthan gum. The crumb will be slightly more tender, so handle gently.
Why did my muffins sink in the middle?
Overly wet bananas or opening the oven door too soon can cause sinking. Drain any excess liquid from thawed bananas and avoid opening the oven until the 18-minute mark. Also check that your baking powder is fresh.
Can I replace the egg?
You can use one flax egg (1 tbsp ground flaxseed mixed with 3 tbsp water, left to gel for 5 minutes). The muffins will be a bit more tender and slightly less tall but still work well.
Do I need to use liners?
No. Grease the muffin tin well with oil or butter, and dust lightly with flour. The muffins should release easily after a brief rest in the pan.
Banana Blueberry Muffins Recipe
Ingredients
Method
- Heat oven to 375°F (190°C) and line a 12-cup muffin tin. In a large bowl, mash the bananas, then whisk in sugar, oil, eggs, and vanilla until smooth.
- Sprinkle flour, baking powder, baking soda, and salt over the wet mixture. Fold with a spatula just until no dry streaks remain.
- Gently fold in the blueberries until barely incorporated, about 4 to 5 folds.
- Divide batter among muffin cups, filling each about three-quarters full. Bake 18 to 22 minutes until tops spring back and a toothpick comes out clean.
- Cool in the pan 5 minutes, then transfer to a wire rack. Serve warm or at room temperature.
Notes
