Peanut Butter Banana Muffins

I remember one Tuesday evening, staring into the fridge, utterly uninspired by the leftover stir-fry and the wilting bag of spinach. The clock was ticking towards dinner, and the kids were already circling like hungry sharks. That’s when my eye landed on a bunch of overripe bananas—the kind with freckled skins that whisper “use me now.” In a moment of desperation, I threw together this recipe for Peanut Butter Banana Muffins, and what came out of the oven was nothing short of a weeknight miracle.

Recipe Overview

• Prep time: 10 minutes
• Cook time: 18 minutes
• Total time: 28 minutes
• Servings: 12 muffins
• Difficulty: Easy

Why You’ll Love This Peanut Butter Banana Muffins

• One-bowl wonder: You only dirty one mixing bowl and a muffin tin, which means less time scrubbing and more time relaxing.
• Pantry-friendly: Most of the ingredients are staples you likely already have—flour, sugar, baking powder, peanut butter, and bananas.
• Make-ahead magic: Bake a batch on Sunday, and you’ve got grab-and-go breakfasts or after-school snacks sorted for days.
• Protein-packed: The peanut butter adds a good dose of protein, making these muffins surprisingly filling for a quick dinner.
• Kid-approved: My husband, who’s usually picky, asked for seconds! Even the little ones who turn their noses up at vegetables will devour these.

Peanut Butter Banana Muffins

15 min prep  ·  18 min cook  ·  12 servings

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Ingredients You’ll Need

• 3 large ripe bananas (about 300g peeled weight)
• 120g creamy peanut butter (no added sugar, for best results)
• 80g unsalted butter, melted
• 100g light brown sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 200g plain flour
• 1 teaspoon bicarbonate of soda
• ½ teaspoon baking powder
• ½ teaspoon salt
• 100ml milk (whole or semi-skimmed works best)
• 50g dark chocolate chips (optional, but highly recommended)

Tip: For the best flavour, use bananas that are heavily speckled with brown spots—they’re sweeter and mash more easily, which means you can use less sugar.

How to Make Peanut Butter Banana Muffins

1. Preheat your oven to 180°C (160°C fan) and line a 12-hole muffin tin with paper cases. The oven should be fully up to temperature before the batter goes in—this ensures a quick rise and a domed top.
2. Mash the bananas in a large mixing bowl using a fork or potato masher until they form a smooth, almost liquid paste with only a few small lumps remaining. You should see a glossy, wet puree that smells intensely fruity.
3. Add the wet ingredients: To the mashed bananas, stir in the peanut butter, melted butter, brown sugar, eggs, vanilla extract, and milk. Whisk everything together until the mixture is uniform and pale tan in colour—it should look like a thick, smooth sauce with a rich, nutty aroma.
4. Combine the dry ingredients in a separate small bowl: the flour, bicarbonate of soda, baking powder, and salt. Whisk them together to aerate and distribute the raising agents evenly.
5. Fold the dry into the wet: Gently tip the flour mixture into the banana mixture and fold with a spatula. Stop as soon as you see no more streaks of white flour—the batter will look slightly lumpy and thick. Overmixing will make the muffins tough, so a few small lumps are absolutely fine.
6. Add the chocolate chips (if using) and fold them in gently. You’ll hear the soft clink of chips against the bowl and see them evenly dispersed through the batter.
7. Divide the batter evenly among the 12 paper cases. Each case should be about three-quarters full—the batter will be thick and slightly sticky, so use two spoons or a cookie scoop. The tops should look slightly domed and glossy.
8. Bake for 16-18 minutes, rotating the tin halfway through. The muffins are done when they’re golden brown on top, spring back lightly when touched, and a skewer inserted into the centre comes out clean. You’ll smell the warm peanut butter and banana filling your kitchen.
9. Cool in the tin for 5 minutes, then transfer to a wire rack. The muffins will be very soft and fragile straight from the oven, so let them firm up in the tin first. Once on the rack, they’ll release steam and develop a slightly crisper outer edge.

Tips From My Kitchen

• Use overripe bananas every time: The riper the banana, the sweeter and more intense the flavour. If your bananas aren’t spotty yet, pop them in a 150°C oven for 15 minutes—the skins will blacken, and the insides will soften and sweeten beautifully.
• Don’t overmix the batter: This is the most common mistake with muffins. Mix until the flour is just incorporated—a few lumps are your friend. Overmixing develops gluten, which leads to dense, rubbery muffins instead of light, fluffy ones.
• Room temperature ingredients: Take your eggs and milk out of the fridge 20 minutes before starting. Cold ingredients can seize the melted butter, making the batter lumpy and uneven. The batter should feel smooth and cohesive when you stir it.
• Let the batter rest for 10 minutes: After mixing, let the batter sit on the counter for 10 minutes before scooping. This allows the starch to absorb the liquid, resulting in a taller, more tender muffin with a better crumb structure.
• Freeze for later: These muffins freeze beautifully. Once completely cool, pop them in a zip-top bag and freeze for up to 3 months. To reheat, microwave one for 20 seconds, or warm them in a 150°C oven for 5 minutes—they’ll taste freshly baked.

Equipment You’ll Need

• Large mixing bowl
• Whisk or hand mixer
• 12-hole muffin tin
• Paper muffin cases
• Wire cooling rack
• Measuring cups and spoons
• Fork or potato masher

Common Mistakes to Avoid

• Overcrowding the pan: If you only have one muffin tin, resist the urge to cram extra batter into each case. Overfilling causes the muffins to merge together as they rise, creating a messy, uneven bake. Stick to three-quarters full per case, and if you have leftover batter, bake a second batch after the first has cooled.
• Wrong temperature: Baking at too low a temperature will give you flat, pale muffins that lack a golden dome. Too high, and the outsides will burn before the centres are cooked. Stick to 180°C (160°C fan) and use an oven thermometer if your oven runs hot or cold.
• Skipping the rest time: The 10-minute rest after mixing isn’t just for show—it allows the raising agents to activate and the flour to hydrate fully. Skipping this step often leads to muffins that are dense and sunken in the middle rather than light and airy.

Delicious Variations to Try

• Spicy Version: Add ½ teaspoon of ground cinnamon and a pinch of cayenne pepper to the dry ingredients. The warmth of the spice cuts through the sweetness of the banana and peanut butter beautifully.
• Vegetarian/Vegan Option: Replace the eggs with two flax eggs (2 tablespoons ground flaxseed mixed with 6 tablespoons water, left to sit for 5 minutes). Use a plant-based milk like oat or almond, and swap the butter for coconut oil. The texture will be slightly denser but still delicious.
• Different Protein: Swap the peanut butter for almond butter or cashew butter for a different nutty profile. You can also add a scoop of vanilla or chocolate protein powder—just reduce the flour by 30g to keep the batter balanced.

What to Serve With Peanut Butter Banana Muffins

• A dollop of Greek yoghurt and a drizzle of honey for a balanced breakfast
• A bowl of fresh berries or sliced apple for a lighter side
• A warm glass of milk or a cup of tea for dunking
• Spread with extra peanut butter for the ultimate indulgence

Still hungry for ideas? You might also love Creamy Peanut Butter Fudge Squares, Moist Banana Nut Muffins Award Winning from our sister kitchens.

Frequently Asked Questions

Peanut Butter Banana Muffins

Moist and flavorful muffins made with ripe bananas and creamy peanut butter, studded with dark chocolate chips for an extra indulgent treat.

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 18 minutes mins

Total Time 33 minutes mins

Servings: 12 muffins

Course: Snack

Cuisine: American

Calories: 310

Ingredients Method Notes

Ingredients

  

• 3 large ripe bananas about 300g peeled weight
• 120 g creamy peanut butter no added sugar, for best results
• 80 g unsalted butter melted
• 100 g light brown sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 200 g plain flour
• 1 teaspoon bicarbonate of soda
• ½ teaspoon baking powder
• ½ teaspoon salt
• 100 ml milk whole or semi-skimmed works best
• 50 g dark chocolate chips optional, but highly recommended

Method

 

1. Preheat your oven to 180°C (160°C fan) and line a 12-hole muffin tin with paper cases. The oven should be fully up to temperature before the batter goes in—this ensures a quick rise and a domed top.
2. Mash the bananas in a large mixing bowl using a fork or potato masher until they form a smooth, almost liquid paste with only a few small lumps remaining. You should see a glossy, wet puree that smells intensely fruity.
3. Add the wet ingredients: To the mashed bananas, stir in the peanut butter, melted butter, brown sugar, eggs, vanilla extract, and milk. Whisk everything together until the mixture is uniform and pale tan in colour—it should look like a thick, smooth sauce with a rich, nutty aroma.
4. Combine the dry ingredients in a separate small bowl: the flour, bicarbonate of soda, baking powder, and salt. Whisk them together to aerate and distribute the raising agents evenly.
5. Fold the dry into the wet: Gently tip the flour mixture into the banana mixture and fold with a spatula. Stop as soon as you see no more streaks of white flour—the batter will look slightly lumpy and thick. Overmixing will make the muffins tough, so a few small lumps are absolutely fine.
6. Add the chocolate chips (if using) and fold them in gently. You'll hear the soft clink of chips against the bowl and see them evenly dispersed through the batter.
7. Divide the batter evenly among the 12 paper cases. Each case should be about three-quarters full—the batter will be thick and slightly sticky, so use two spoons or a cookie scoop. The tops should look slightly domed and glossy.
8. Bake for 16-18 minutes, rotating the tin halfway through. The muffins are done when they're golden brown on top, spring back lightly when touched, and a skewer inserted into the centre comes out clean. You'll smell the warm peanut butter and banana filling your kitchen.
9. Cool in the tin for 5 minutes, then transfer to a wire rack. The muffins will be very soft and fragile straight from the oven, so let them firm up in the tin first. Once on the rack, they'll release steam and develop a slightly crisper outer edge.

Notes

For best results, use very ripe bananas with brown spots. Do not overmix the batter. Muffins can be stored in an airtight container at room temperature for up to 3 days.

These Peanut Butter Banana Muffins have become my secret weapon for those evenings when dinner feels like a chore rather than a joy. They come together in under 30 minutes, require almost no cleanup, and somehow manage to feel both wholesome and indulgent at the same time. If you give them a try, I’d love to hear how they turned out—drop a comment below and let me know if your family asked for seconds too.