High Protein Banana Muffins (14g Protein Each)

If you’ve ever wished for a muffin that keeps you full until lunch and actually tastes like banana bread, these high protein banana muffins are the answer.

They’re soft, lightly sweet, and come together in one bowl, no stand mixer required. Each muffin packs 14 grams of protein, so they work just as well post-workout as they do with morning coffee.

What Makes These Muffins So Good

The texture is what sold me. They rise tall and bake up tender, not one bit dry or rubbery like some protein bakes. Greek yogurt and ripe banana do a lot of the heavy lifting for moisture.

The protein powder blends right into the oat flour, so you don’t get that chalky aftertaste. I keep a batch in the freezer and grab one on busy mornings.

Use the ripest bananas you can find—the ones with brown spots you’d otherwise toss. They sweeten the batter enough that you can skip extra sugar if you like.

Ingredients

• 2 very ripe bananas, mashed (about 1 cup): the spottier, the sweeter—no added sugar needed
• 2 large eggs: room temperature if you have the time
• 1/2 cup plain Greek yogurt: full-fat or 2% keeps them moist; nonfat works too
• 1 scoop vanilla or unflavored protein powder (about 25g): whey, casein, or a plant-based blend all work
• 1 cup oat flour: you can make your own by blending rolled oats into a fine powder
• 1 tsp baking soda
• 1/2 tsp ground cinnamon
• 1/4 tsp salt
• 2 tbsp honey or maple syrup (optional): skip if your bananas are extra ripe and you prefer less sweetness

Variations / Substitutions

• Protein powder: unflavored works well with an extra teaspoon of vanilla extract; plant-based protein may make the batter slightly thicker, so add a tablespoon of milk if needed.
• Flour: almond flour keeps them gluten-free, but they’ll be more dense. Use the same volume.
• Sweetness: swap honey for maple syrup or a mashed date.
• Add-ins: fold in 2 tablespoons of dark chocolate chips or chopped walnuts for a little crunch.
• Dairy-free: use a thick dairy-free yogurt and a plant-based protein powder.

If you enjoy these, my Almond Flour Banana Bread is another everyday favorite.

How To Make High Protein Banana Muffins

Step 1: Mash the Bananas and Mix the Wet Ingredients

Preheat your oven to 350°F (175°C) and line 4 cups of a standard muffin tin with paper liners. In a large bowl, mash the 2 very ripe bananas with a fork until mostly smooth—a few small lumps are fine. Whisk in the 2 large eggs, 1/2 cup Greek yogurt, 1 scoop vanilla or unflavored protein powder, and the 2 tablespoons of honey if you’re using it. Keep whisking for about a minute until everything feels silky and well blended.

You’re looking for a smooth, pourable mixture. The bananas don’t need to be pureed; a little texture here and there is welcome.

Step 2: Whisk the Dry Ingredients

In a separate bowl, stir together the 1 cup oat flour, 1 teaspoon baking soda, 1/2 teaspoon cinnamon, and 1/4 teaspoon salt. Whisk gently for about 30 seconds to break up any clumps and distribute the leavening evenly.

Because oat flour can settle and form small lumps, this quick whisk is worth the extra bowl. The cinnamon adds just enough warmth without overpowering the banana.

Step 3: Fold the Batter Together

Pour the wet mixture into the bowl of dry ingredients. Using a rubber spatula, fold everything together with a few broad strokes. Stop as soon as you no longer see dry streaks of flour, even if the batter looks a little lumpy.

A light hand here keeps the muffins tender. Overmixing develops the protein in the flour and can make them tough, so resist the urge to stir more than you need to.

Step 4: Fill the Cups and Bake

Divide the batter evenly among the four prepared muffin cups—they will be almost full. Slide the tin into the oven and bake for 18 to 22 minutes. The tops should rise and turn golden, and a toothpick inserted in the center will come out clean or with a few moist crumbs.

If you notice the tops browning too quickly, you can tent the pan loosely with foil after the 15-minute mark. Let the muffins cool in the tin for 5 minutes before you try to move them.

Step 5: Remove from the Pan and Serve

After those 5 minutes, transfer the muffins to a wire rack. Serve them warm, or let them cool completely before storing. They’re best the day they’re baked, but they’ll stay soft for days.

I like to split one open while it’s still a little warm and smear a little butter on each half. The crumb is tender and smells just like banana bread.

Tips for the Best High Protein Muffins

• Use bananas that are brown and soft. Their high sugar content means you need less added sweetener.
• If your protein powder is unsweetened, taste the wet mixture before baking and add an extra drizzle of honey or maple syrup.
• Don’t skip the 5-minute rest in the tin. The muffins continue to set as they cool, and a hot muffin is fragile.
• These freeze beautifully. Wrap each cooled muffin in plastic wrap and freeze for up to 3 months. Defrost overnight or microwave for 30 seconds.
• To make them gluten-free, use certified gluten-free oat flour or swap in almond flour.

Bake times by muffin size:

Muffin Size	Pan	Time
Standard (this recipe)	12-cup tin	18–22 mins
Jumbo	6-cup tin	22–25 mins
Mini	24-cup tin	10–12 mins

Storing Leftover Muffins

Refrigerate: Place cooled muffins in an airtight container; they’ll keep for up to 4 days. Let them come to room temp or warm briefly before eating.

Reheating: A 15-second microwave zap revives that just-baked softness.

Serve cold: They taste great at room temperature, so they’re easy to pack for work or school.

Frequently Asked Questions

Can I make these with plant-based protein powder?

Yes, but the batter may be a little thicker. Add a tablespoon of milk or water to loosen it, and check for sweetness since many plant-based powders are less sweet.

Why did my muffins sink in the middle?

This usually means the oven door was opened too early, or the batter was overmixed. Wait until the last 3 minutes to peek, and fold gently.

Can I use frozen bananas?

Absolutely. Thaw them completely and drain off any excess liquid before mashing, or the batter will be too thin.

Can I double this recipe?

Yes, double all ingredients and use a 12-cup muffin tin. Bake at the same temperature, adding 2–3 minutes to the bake time.