High-Protein Banana Bread (10g Protein Per Slice)

This high-protein banana bread answers the call when you want something sweet that also keeps you full. It tastes like classic banana bread, with a soft, tender crumb and no chalky aftertaste.

It’s made with ripe bananas, Greek yogurt, and vanilla protein powder, and comes together in one bowl. Great for meal prep or a post-workout snack.

Why This Banana Bread Works

Most protein banana breads turn out dry, dense, or oddly chewy. This one stays moist because the Greek yogurt and ripe bananas bring tons of moisture, and using a blend of whey protein and a little all-purpose flour keeps the texture light.

The banana flavor leads, the vanilla protein blends in quietly, and the edges get just a little crisp while the center stays tender. It’s the version I keep coming back to for breakfast, a snack, or dessert with a smear of almond butter.

Ingredients

• 3 large very ripe bananas, mashed: the spottier the better for natural sweetness
• 1/2 cup plain Greek yogurt: 2% or full-fat keeps it moist
• 1/4 cup melted coconut oil or unsalted butter: butter gives a richer flavor
• 2 large eggs: at room temperature if you can
• 1 tsp vanilla extract
• 1 cup (100g) vanilla or unflavored whey protein powder: whey-based blends best; see substitutions for plant-based
• 1 cup all-purpose flour: spooned and leveled, or half whole wheat
• 1/2 cup packed light brown sugar or coconut sugar: for moisture and caramel notes
• 1 tsp baking soda
• 1/2 tsp fine sea salt
• 1/2 tsp ground cinnamon: (optional)
• 1/2 cup chopped walnuts or dark chocolate chips: (optional)

Variations / Substitutions

• Protein powder: Use an unflavored whey and add 1 extra tablespoon of brown sugar. A pea protein blend works but the loaf may be slightly denser; add 2 extra tablespoons of yogurt.
• Sweetener: Swap brown sugar with an equal amount of coconut sugar or maple syrup. If using a liquid sweetener, reduce the yogurt by 2 tablespoons.
• Dairy-free: Use coconut yogurt and melted coconut oil.
• Add-ins: Fold in 1/2 cup chopped pecans, walnuts, or dark chocolate chips.

High Protein Egg Casserole makes a great breakfast to go with this banana bread.

How to Make High-Protein Banana Bread

Step 1: Mash the Bananas

Preheat your oven to 350°F (175°C) and line a 9×5-inch loaf pan with parchment paper. In a large mixing bowl, mash the 3 large ripe bananas with a fork until mostly smooth. A few small lumps are okay, they will add moisture.

The mashed bananas should look like thick, chunky applesauce and smell sweet and banana-y. If your bananas aren’t super spotty, you can add an extra tablespoon of brown sugar later to compensate.

Step 2: Whisk in the Wet Ingredients

Add the 1/2 cup Greek yogurt, 1/4 cup melted coconut oil, 2 eggs, 1 teaspoon vanilla, and the 1/2 cup brown sugar to the bowl. Whisk everything together until the mixture is smooth and no streaks of yogurt or egg remain, about 1 minute.

The batter will look pale and a bit glossy from the oil. You’ll catch the vanilla and banana aroma together as you whisk.

Step 3: Fold in the Dry Ingredients

Sprinkle the 1 cup protein powder, 1 cup flour, 1 teaspoon baking soda, 1/2 teaspoon salt, and cinnamon (if using) over the wet mixture. Use a rubber spatula to fold the dry into the wet just until no white streaks remain. Overmixing makes the bread tough, so stop as soon as the flour disappears, about 30 seconds of folding.

The batter will be thick and lumpy from the bananas, but there shouldn’t be any dry pockets. If you’re adding walnuts or chocolate chips, fold them in now.

Step 4: Bake the Banana Bread

Scrape the batter into the prepared loaf pan and smooth the top with the spatula. Bake on the center rack for 45 to 50 minutes. Check at 45 minutes: the top should be deep golden brown and a toothpick inserted in the center should come out with just a few moist crumbs.

If the top browns too quickly, tent loosely with foil. The internal temperature will be around 200 to 205°F when done.

Step 5: Slice and Serve

Let the loaf cool in the pan for 10 minutes, then lift it out using the parchment and transfer to a rack to cool for 20 minutes before slicing. The bread continues to set as it cools, so slicing too early can make it crumbly.

Serve warm or at room temperature, with a smear of almond butter or a drizzle of honey. The slices should be moist and tender, with a faint hint of vanilla protein.

A Few Tips for High-Protein Banana Bread

• Use the spottiest bananas you can find. They provide the most sweetness and moisture, so you don’t need extra sugar.
• Let the loaf cool completely for the cleanest slices. If you can’t wait, a serrated knife helps.
• If your protein powder is already sweetened, taste the batter and reduce the brown sugar by a tablespoon if needed.
• For an extra tender crumb, swap 2 tablespoons of the flour for almond flour.

Bake times by pan type:

Storing and Freezing

• Refrigerate: Keep in an airtight container at room temperature for up to 3 days, or in the fridge for up to a week.
• Reheating: Warm slices in the toaster oven or microwave for 15-20 seconds to soften.
• Serve Cold: It’s fine chilled, but slightly warmed brings back the fresh-baked taste.

What to Serve with High-Protein Banana Bread

For a quick breakfast, spread a slice with almond butter and a drizzle of honey. Coffee or a cold glass of milk rounds it out nicely. As a post-workout snack, pair it with a hard-boiled egg on the side for even more protein.

Frequently Asked Questions

Can I freeze this banana bread?

Yes. Wrap individual slices tightly and freeze for up to 3 months. Thaw overnight in the fridge.

Can I make this gluten-free?

Swap the all-purpose flour for a 1:1 gluten-free blend, and check that your protein powder is certified gluten-free.

Why did my banana bread sink in the middle?

It was likely underbaked. Always test with a toothpick; don’t open the oven door during the first 30 minutes to avoid a temperature drop.

Can I reduce the sugar?

You can cut the brown sugar to 1/4 cup, but the loaf will be less moist and slightly less sweet. The bananas do a lot of the sweetening already.

High-Protein Banana Bread Recipe

Print Recipe Pin Recipe

Prep Time 10 minutes mins

Cook Time 50 minutes mins

Total Time 1 hour hr

Servings: 10 servings

Calories: 225

Ingredients Method Notes

Ingredients

  

• 3 large very ripe bananas, mashed
• 1/2 cup plain Greek yogurt
• 1/4 cup melted coconut oil or unsalted butter
• 2 large eggs
• 1 tsp vanilla extract
• 1 cup (100g) vanilla or unflavored whey protein powder
• 1 cup all-purpose flour
• 1/2 cup packed light brown sugar or coconut sugar
• 1 tsp baking soda
• 1/2 tsp fine sea salt
• 1/2 tsp ground cinnamon (optional)
• 1/2 cup chopped walnuts or dark chocolate chips (optional)

Method

 

1. Preheat oven to 350°F (175°C) and line a 9×5-inch loaf pan with parchment. Mash the 3 bananas in a large bowl until mostly smooth.
2. Add the 1/2 cup yogurt, 1/4 cup melted oil, 2 eggs, 1 tsp vanilla, and 1/2 cup sugar; whisk until smooth, about 1 minute.
3. Sprinkle the 1 cup protein powder, 1 cup flour, 1 tsp baking soda, 1/2 tsp salt, and cinnamon over the wet ingredients. Fold with a spatula just until no dry streaks remain; stir in walnuts or chocolate chips if using.
4. Scrape batter into the pan and smooth the top. Bake 45-50 minutes until a toothpick comes out with moist crumbs. Cool in pan 10 minutes, then lift out and cool on a rack.
5. Slice and serve warm, with almond butter or honey if you like.

Notes

Cool completely before storing, or trapped steam will soften the crust. For a nut-free version, skip the walnuts or use chocolate chips. The loaf slices best with a serrated knife.