5-Ingredient Flourless Peanut Butter Banana Chocolate Chip Blondies
Too many “healthy” dessert substitutes end up dry, rubbery, and disappointing. But when a dessert relies on whole-food chemistry rather than artificial sweeteners or specialty gums, healthy baking truly rivals traditional pastry.
Tested and approved in Brittany Lupton’s viral dessert bake-off, these Flourless Peanut Butter Banana Blondies achieve a fudgy, melt-in-your-mouth brownie consistency without a single grain of flour, butter, or refined white sugar.
By utilizing the natural pectin and moisture of ripe mashed bananas paired with the rich lipids of natural dripping peanut butter, this 5-ingredient batter bakes into decadent squares packing healthy plant fats, potassium, and satisfying satiety.
Watch the Recipe Walkthrough (00:54 – 04:17)
Nutritional Architecture: Potassium & Monounsaturated Lipids
- Emulsification Without Gluten: Whisking a whole pasture-raised egg into natural dripping peanut butter creates a stable lipid emulsion that traps moisture, giving the bars a rich chew without needing wheat gluten.
- Potassium & Starch Retrogradation: Ripe bananas supply natural fructose and bioavailable potassium, allowing you to cut external sweeteners down to just a third of a cup of pure maple syrup.
- Flavanol Synergy: Melting semi-sweet or dark chocolate chips over the warm batter introduces heart-healthy cocoa flavanols that support vascular tone.
Mid-Recipe Culinary Connection: If you love incorporating naturally sweet, nutrient-dense fruits into wholesome morning baking, explore our Baked Cinnamon Apple & Walnut Breakfast Crisp.
To discover how American heritage baking evolved from heavy molasses bars to modern whole-food fruit bakes, browse the historical archives at the Library of Congress American Food Traditions.
Ingredients Breakdown (US Standard & Metric)
- Ripe Bananas: 2 medium (the more brown speckles, the sweeter the batter)
- Natural Creamy Peanut Butter: 1 cup (approx. 250g), runny/dripping (only peanuts and salt)
- Pure Grade-A Maple Syrup: ⅓ cup (approx. 80ml)
- Pasture-Raised Egg: 1 large
- Ground Cinnamon: 1 teaspoon
- Baking Soda: 1 teaspoon
- Semi-Sweet or Dark Chocolate Chips: ½ cup (approx. 90g), divided (plus extra for sprinkling on top)
- Avocado Oil Spray: For coating the pan
Step-by-Step Baking Technique
- Preheat & Prep Pan: Preheat your oven to 350°F (175°C). Mist an 8×8-inch square glass or ceramic baking dish with avocado oil spray.
- Mash the Bananas: In a large mixing bowl, mash the 2 ripe bananas thoroughly with a fork until mostly smooth.
- Whisk Wet Base: Stir in 1 cup of natural dripping peanut butter and ⅓ cup of maple syrup until uniform. Crack in the egg and whisk briskly for 45 seconds until the batter thickens and turns glossy.
- Incorporate Leavening & Spice: Sprinkle in 1 teaspoon of ground cinnamon and 1 teaspoon of baking soda. Stir well to ensure the leavening is evenly distributed.
- Fold Chocolate: Fold in half of the chocolate chips. Pour the batter into the prepared baking dish, smoothing it out to the edges with a spatula. Scatter the remaining chocolate chips across the surface.
- Bake: Bake at 350°F (175°C) for 25 to 30 minutes. A toothpick inserted in the center should come out clean with a few moist crumbs (avoid overbaking to maintain the fudgy center).
- Cool & Slice: Allow the blondies to cool completely in the dish for at least 20 minutes before slicing into 16 rich squares.
Nutritional Analysis (Per Serving)
- Servings: 16 squares
- Calories: 145 kcal
- Protein: 4.5g
- Carbohydrates: 14g
- Dietary Fiber: 2g
- Healthy Fats: 9g (primarily monounsaturated fats from peanuts)
- Potassium: 140mg
