Banana Bread Peanut Blondie

These healthy banana blondies are everything you want from a guilt-free dessert — soft, fudgy, packed with banana flavor and done in 30 minutes. Made with cottage cheese, peanut butter and whey protein, each slice comes in at just 110 calories and 7.5 grams of protein. No mixer, no fuss, just one bowl and a blender or fork.

30 min

110 kcal

7.5g protein

6 servings

Banana bread peanut blondie slices with chocolate chips on parchment paper

Close-up of banana bread peanut blondie showing fudgy texture and melted chocolate chips

Sofia holding a slice of banana bread peanut blondie with a bite taken out

Watch the Recipe

Ingredients

Serves 6

100g cottage cheese
2 bananas (~180g)
1 egg
35g flour
15g peanut butter
20g whey protein
15g chocolate chips
3g baking powder

Optional: vanilla, cinnamon & a pinch of salt

Instructions

Mix everything.
Top with the chocolate chips.
Bake at 170°C (no fan) for about 22 minutes.

Tips & Notes

Use very ripe, spotty bananas — they are sweeter and mash more easily, giving a better texture and more natural sweetness.
Blend the cottage cheese smooth before mixing if you prefer a completely even crumb; leave it chunky for a denser, fudgier bite.
Do not overbake — 22 minutes at 170°C (no fan) is the sweet spot. The blondie should look barely set in the center when you pull it out; it firms up as it cools.
Vanilla and cinnamon are optional but highly recommended — they bring out the banana bread flavor significantly.
Swap chocolate chips for cacao nibs to reduce sugar, or add a drizzle of extra peanut butter on top before baking for a swirled look.

Nutrition Facts

	Per serving	Per 100g
Calories	110 kcal	178 kcal
Protein	7.5g	12.2g
Carbs	13g	21.4g
Fat	3.3g	5.4g

* Macros per 1 slice (1/6 of the blondie, ~62g). Whole blondie: 660 kcal, 45g protein.

Frequently Asked Questions

Yes — replace the whey protein with the same amount of extra flour (20g). The texture will be slightly denser and the protein per slice will drop to around 5g, but the blondie will still be delicious.

Absolutely. Almond butter, cashew butter or sunflower seed butter all work well. Each will change the flavor slightly but the texture stays the same. Just use the same 15g amount.

The riper the better. Overripe bananas with brown spots are sweeter and mash more easily, which means you will need less or no added sweetener and the blondie will have a stronger banana flavor.

Store in an airtight container in the fridge for up to 4 days, or freeze individual slices for up to 2 months. Reheat briefly in the microwave for 20–30 seconds to bring back the soft texture.

Yes — swap the 35g of regular flour for oat flour or a gluten-free flour blend. The result will be slightly more dense but just as tasty. Make sure your whey protein and baking powder are also gluten-free certified.