Banana Chocolate Protein Blondies

Banana Chocolate Protein Blondies

If you’re anything like me, your sweet tooth doesn’t exactly wait until “dessert time.” And sometimes, reaching for a sugar-packed treat just leaves you feeling… well, regretful. That’s why I love these Banana Chocolate Protein Blondies. They’re chewy, chocolatey, and naturally sweet—but also packed with protein thanks to oat flour and a scoop of casein or whey.

Even better, this recipe takes less than 30 minutes start to finish, making it a quick win for midweek meal prep or impromptu snacking. Whether you’re craving something indulgent or need a better-for-you bar to toss in your gym bag, these blondies have your back.

Banana Chocolate Protein Blondies | The Food Cafe

Why You’ll Love This Recipe

• High in protein – features casein or whey and oat flour
• Refined sugar-free – sweetened naturally with banana and honey
• Simple ingredients – pantry-friendly and customizable
• Kid-approved – they won’t even know they’re “healthy”
• Soft-baked texture – thanks to banana and peanut butter

Ingredients Overview

What Goes Into Protein Blondies?

Wet Ingredients

• Ripe banana – adds natural sweetness and moisture
• Egg + extra yolk – for structure and richness
• Drippy peanut butter – helps bind and adds healthy fats
• Maple syrup or honey – natural sweetener with flavor

Dry Ingredients

• Oat flour – gluten-free friendly and high in fiber
• Vanilla protein powder – I used casein for softness, but whey works too
• Baking powder – gives a little lift
• Chocolate chips – add as much as your heart desires (I always do!)

Pro Tip: If your peanut butter is too thick, warm it slightly in the microwave to make mixing easier.

Step-by-Step Instructions

How Do You Make Protein Blondies?

1. Prep the Pan: Preheat oven to 350°F (180°C). Grease or line a loaf tin with parchment paper.
2. Mix Wet Ingredients: In a large bowl, mash the banana. Add egg, egg yolk, peanut butter, and maple syrup. Stir until smooth.
3. Combine Dry Ingredients: In another bowl, whisk together oat flour, protein powder, and baking powder.
4. Bring It All Together: Add dry mix to wet and stir just until combined. Fold in chocolate chips.
5. Bake and Cool: Pour batter into prepared tin and smooth the top. Bake for 15–20 minutes or until a toothpick comes out clean. Cool completely before slicing.

What Are Some Easy Variations?

• Nut-free? Use sunflower seed butter instead of peanut butter.
• Vegan? Swap the egg for a flax egg and use plant-based protein.
• Add-ins: Try walnuts, coconut flakes, or swirl in a little almond butter on top before baking.

How Do You Store and Meal Prep Them?

• Fridge: Store in an airtight container for up to 5 days.
• Freezer: Wrap individually and freeze for up to 2 months.
• Meal prep tip: Double the batch and freeze half for busy mornings or post-workout snacks.

Can I Use Different Protein Powders?

Yes! Casein makes them extra soft, but whey or a plant-based protein powder works, too. Just keep an eye on moisture—casein tends to absorb more liquid.

Are These Good for Kids?

Absolutely. They’re naturally sweet and easy to chew. Even picky eaters will go for seconds—and they won’t even know they’re packed with protein.

Can I Make These Without Oat Flour?

Yes. Almond flour or whole wheat flour can be used instead. Just know the texture may vary slightly, but they’ll still be delicious.

What’s the Best Way to Serve Them?

They’re great right out of the fridge or warmed slightly. Pair them with coffee, a post-gym shake, or even a smear of peanut butter for extra indulgence.

Nutrition Info (Per Blondie – makes ~8)

• Calories: 210
• Protein: 9g
• Carbs: 22g
• Fat: 9g
• Fiber: 3g

Join the Conversation

Made these Banana Chocolate Protein Blondies? I’d love to see how they turned out! Leave a comment and rating below, pin it for later, or tag me on Instagram @shannon_ladywarrior with your favorite add-ins.

Looking for more healthy baked snacks? Check out my Protein Breakfast English Muffin or Date Protein Balls—both high-protein and sweet-tooth approved.

Want to Go Deeper?

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