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A stack of protein chocolate brownies on a white plate.
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sweet potato protein brownies without protein powder

I've been after a really, really fudgy, better-for-you brownie for a long time, and finally these sweet potato protein brownies deliver without protein powder! These have 7g of protein per slice (thanks to egg whites and nut butter), which is triple a standard brownie!
Prep Time10 minutes
Cook Time30 minutes
Total Time40 minutes
Course: Dessert
Cuisine: American
Keyword: high protein
Servings: 9
Calories: 269kcal
Author: Mika Kinney

Ingredients

  • 2 MUSH chocolate brownie overnight oats containers 5.5 oz each, see notes for swaps
  • ¾ cup mashed sweet potato about 2 small potatoes
  • ½ cup nut butter almond, peanut, or sunbutter
  • cup maple syrup or coconut sugar or brown sugar
  • ¼ cup egg whites or 1 large egg
  • ¼ cup dark chocolate chips melted and slightly cooled
  • 1 teaspoon vanilla extract
  • 1 teaspoon baking soda
  • ¼ teaspoon sea salt
  • ½ cup dark chocolate chips

Instructions

  • Preheat oven to 325°F. Line an 8x8 baking pan with parchment paper. A 9x9 pan works too, but they will just be thinner (I used a 9x9 in these photos).
    Make your mashed sweet potato by cooking the 2 small sweet potatoes (or 1 large) in the oven or prick them all over, wrap in a wet paper towel, and microwave for 5-7 minutes until soft. Remove carefully.
  • Add both 2 MUSH chocolate brownie overnight oats containers⅓ cup maple syrup, and ¼ cup egg whites to a blender and blend until completely smooth. No oat chunks.
    Melt your ¼ cup dark chocolate chips in 30 second increments.
  • Scoop out the inside of the sweet potatoes and add it to a large bowl (it's fine if it's hot). Mash well. Then add in the ½ cup nut butter, melted dark chocolate, blended oat mixture, 1 teaspoon vanilla extract, 1 teaspoon baking soda, and ¼ teaspoon sea salt and mix until well combined.
  • Fold in most of the ½ cup dark chocolate chips (or chopped pb cups), reserving a small handful for the top.
  • Pour batter into prepared pan, smooth the top, and sprinkle remaining chocolate chips over everything. Bake at 325°F for 28–30 minutes, until the edges are set and the center has just a slight jiggle.
  • Cool completely in the pan before slicing (if you can wait!!). They firm up a lot as they cool and will slice much cleaner.

Notes

No MUSH? Sub 1.25 cups rolled oats + ⅓ cup cocoa powder + 1 teaspoon vanilla extract + 3 tablespoon egg whites (additional) + 2 tablespoon hemp seeds — blend together with everything else and use in place of the blended MUSH.
Nut butter: Sunbutter makes this nut-free. Peanut butter has more protein but it tastes very peanut buttery.
Storage: Store covered at room temperature for up to 3 days, or refrigerate for up to 1 week. Freeze individually wrapped for up to 3 months.

Nutrition

Serving: 1slice | Calories: 269kcal | Carbohydrates: 29g | Protein: 7g | Fat: 14g | Fiber: 3g | Sugar: 16g