Banana Walnut Protein Muffins

Last updated on August 9th, 2025

Fluffy, moist and full of flavour, these banana walnut protein muffins are packed with protein, fibre and nutrient-rich nuts. A delicious and satisfying breakfast or grab-and-go snack, they taste just like your favourite banana bread!

This one-bowl recipe is super quick to mix up and made with simple, wholesome ingredients like rolled oats, dark brown sugar, a hint of vanilla and a farm fresh egg.

Here’s everything you’ll need to make these banana walnut protein muffins

• Butter (sub dairy free)
• 1 egg
• Vanilla
• Dark brown sugar (or liquid honey)
• 2 very ripe medium-sized bananas
• Bread or all-purpose flour
• Your favourite protein powder
• Old fashioned rolled oats
• Baking soda
• Kosher or fine sea salt
• Walnuts, chopped

I use vegan butter to keep these muffins dairy free, and bread flour because it’s higher in protein. This recipe also works well with both salted or unsalted butter, AP flour or your favourite 1:1 gluten free flour blend. The protein powder is optional. Should you choose to omit it, simply replace it with an additional ¼ cup flour!

Served warm out of the oven with a little almond, peanut or honey butter, these are everyone’s favourite muffins!

5 more healthy-ish breakfast recipes to try

Overnight Chia Oats

Large Batch High-Protein Granola

Walnut Banana Bread

Bakery Style Blueberry Muffins

Blueberry Banana Oat Muffins

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Banana Walnut Protein Muffins

5 from 1 vote

Fluffy, moist and full of flavour, these banana walnut protein muffins are packed with protein, fibre and nutrient-rich nuts. A delicious and satisfying breakfast or grab-and-go snack, they taste just like your favourite banana bread!

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Prep Time:15 minutes mins

Cook Time:20 minutes mins

Course: Breakfast, Snack

Keyword: banana, high-protein, muffins, walnut

Servings: 12

Equipment

• Measuring set
• Whisk
• Spatula
• 4 Qt mixing bowl
• 12-cup muffin tin
• Wire cooling rack

Ingredients

• 1/3 cup butter melted and cooled
• 1 egg whisked
• 1 teaspoon vanilla extract
• 2/3 cup dark brown sugar sub ½ cup (170 g) liquid honey
• 2 very ripe medium-sized bananas mashed
• 1¼ cups flour
• 2 tablespoons protein powder
• 1 tablespoon old fashioned rolled oats
• 1 teaspoon baking soda
• Pinch kosher or fine sea salt
• ¾ cup walnuts roughly chopped

US Customary – Metric

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Instructions

• Preheat oven to 350ºF (177ºC) and prepare non-stick or parchment-lined muffin tin.
• In a large bowl, whisk together egg, butter, vanilla and brown sugar. Stir in mashed banana. Add flour, protein powder, oats, baking soda and salt and continue mixing just until combined (still lumpy!). Fold in chopped walnuts and continue to stir just until they’re evenly distributed.
• Transfer batter to muffin tin dividing it equally to fill 12 cups.
• Bake for 20-22 minutes until lightly browned and a tester comes out clean. Let cool on wire cooling rack for 20 minutes, remove from baking pan and serve.

Notes

Butter: I use vegan butter to make these muffins dairy free. This recipe also works well with both salted or unsalted butter

Flour: I prefer to bake with a hard wheat, unbleached bread flour. Hard wheat or ‘strong’ flour is made from hard wheat kernels and is a little more dense and higher in protein. This recipe also works well with all-purpose flour.

To make gluten free: Use an equal amount of your favourite gluten-free 1:1 flour blend.

Walnut substitutes: These muffins are also delicious when made with sliced almonds, cashews or pecans or make them nut free by replacing the walnuts with pumpkin and/or sunflower seeds.

Protein powder optional: Should you wish to skip the protein powder simply replace it with an additional ¼ cup flour.

Storage: Leftover muffins will keep in a well-sealed container on the counter for 2-3 days, in the refrigerator for up to a week and in the freezer for up to 3 months.