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Your New Favorite Snack: Protein Peanut Butter Brownie Cookies

Decadence meets nutrition in these irresistible protein peanut butter brownie cookies. They’re the best of both worlds—a gooey peanut butter cookie merged with a fudgy, chewy brownie. It’s a match made in dessert heaven. Best of all, they’re rich in protein and designed with stable blood sugar in mind. These cookies feature a generous dose of healthy fats and protein, thanks to the peanut butter and chocolate collagen peptides. When that inevitable sweet craving strikes, these totally satisfy. Let’s get baking.

Sheet tray of brownie cookies_protein peanut butter brownie cookies

WHY YOU’LL LOVE THIS RECIPE

These protein peanut butter brownie cookies are a fusion of two dessert classics: peanut butter cookies and decadent brownies. And you’ll love them for multiple reasons. First and foremost, they’re straightforward to make—you can whip up a batch in 15 minutes. Second, they taste divine. This cookie balances the nutty goodness of peanut butter with the indulgent, fudgy richness of a brownie. Third, these cookies are packed with protein. Whether you’re looking for a more satisfying snack or post-workout treat, these cookies have you covered. Lastly, they’re made with stable blood sugar in mind. No need to worry about a sugar crash.

Watch the recipe video here!

WHAT are protein cookies?

Protein cookies are a nutritious twist on the typical cookie, specifically crafted with a higher protein content. They usually incorporate ingredients like protein powder, nut butter, or alternative flours—like almond or chickpea flour—to boost their protein content. Protein cookies cater to a variety of dietary preferences and fitness goals, serving as a convenient and delicious way to support muscle recovery, maintain energy levels, or simply enjoy a nourishing treat.

Peanuts_protein peanut butter brownie cookies

Have PCOS? PRotein Cookies are a healthy snack option

As a woman with PCOS, nutrient-dense snacks are key—i.e. those that are hormone-friendly and keep blood sugar balanced. Fortunately, these cookies fit the bill. Given that PCOS is often associated with insulin resistance, protein cookies—made with minimal refined carbohydrates—can help stabilize blood sugar levels. Additionally, because PCOS is characterized by hormonal imbalances (like elevated testosterone levels), consuming a diet higher in protein and lower in processed sugars may help reduce some PCOS symptoms.

Working to balance your hormones, naturally? Get my hormone eBook here!

INGREDIENTS FOR THIS RECIPE

Made with mostly pantry staples, below are the ingredients you’ll need:

Egg

The other star of the show. For this recipe, you can choose black chia seeds or white chia seeds—both work!

Maple Syrup

My go-to unrefined sugar to add a note of sweetness to the cookies. To make these cookies lower sugar, use a maple syrup alternative.

PEanut BUTTER

Packed with healthy fats and a bit of protein, adding peanut butter to the mix makes these cookies rich and creamy. Can’t do peanuts? Almond butter works too!

VANILLA EXTRACT

Nothing pairs better with maple syrup and peanut butter than a bit of vanilla extract.

Oat Flour

Oat flour is made by grinding whole oats into a fine, powdery consistency. It’s high in fiber, which can aid in digestion, help manage blood sugar levels, and promote a feeling of fullness. I love baking with this oat flour, as it adds a slightly dense consistency to baked goods.

Baking powder

To help the dough rise and create a softer, more tender cookie.

chocolate collagen peptides

I’ll let the reviews speak for themselves, but this protein powder is so delicious. It blends right into hot liquids, leaves no chalky taste in baked goods, and makes for a delightfully sweet (without any added sugar!) chocolate chia pudding.

SEA SALT

The ultimate flavor-enhancer. You can use any type of high-quality sea salt. I typically use Celtic sea salt or pink Himalayan sea salt.

Brownie cookies_protein peanut butter brownie cookies

HOW TO MAKE protein peanut butter brownie cookies

  1. Preheat oven to 350F. Line a baking sheet with parchment paper.
  2. In a mixing bowl, add egg, maple syrup, vanilla extract, and peanut butter. Whisk until smooth.
  3. Into the same bowl, add oat flour, collagen peptides, baking powder, and a pinch of sea salt. Fold to combine.
  4. It will be sticky, but dollop 8-9 dough balls on your baking sheet.
  5. Bake for 9-10 minutes, remove from the oven, and flatten gently with a fork or spatula (this will create a flakey, crinkly texture on top!).
  6. Sprinkle each with a bit more salt. Once cooled, store in the fridge. I love to eat these cold, straight from the fridge!

RECIPE TIPS AND NOTES

First and foremost, use a creamy peanut butter with minimal ingredients—like this. Ideally, it doesn’t have any added oils or sugar. If you can’t do peanuts, sub almond butter or tahini. Have a gluten allergy? Be sure to use certified gluten-free oat flour. I haven’t tried another type of flour in these, but a 1:1 ratio swap of whole wheat flour should work just fine! Lastly, I’ve only ever used these collagen peptides for this recipe, so the consistency will change if you use another type of chocolate protein powder.

Jar of peanut butter_protein peanut butter brownie cookies
peanut-butter-brownie-protein-cookies

Protein Peanut Butter Brownie Cookies

A cross between a gooey peanut butter cookie and a fudgy, chewy brownie, these are the best of both worlds. With stable blood sugar in mind, this simple recipe is packed with healthy fats and protein. When a sweet craving strikes, they totally satisfy.
Prep Time: 5 minutes
Cook Time: 10 minutes
Course: Dessert, Snack
Cuisine: American
Keyword: blood sugar friendly, gluten-free, healthy dessert, healthy snack, protein cookies, vegetarian

Ingredients

  • 1 egg
  • 1/4 cup maple syrup
  • Dash vanilla extract
  • 1/2 cup creamy peanut butter
  • 1/3 cup oat flour
  • 1 teaspoon baking powder
  • 2 scoops Vital Proteins collagen peptides
  • Pich sea salt

Instructions

  • Preheat oven to 350F. Line a baking sheet with parchment paper.
  • In a mixing bowl, add egg, maple syrup, vanilla extract, and peanut butter. Whisk until smooth.
  • Into the same bowl, add oat flour, collagen peptides, baking powder, and a pinch of sea salt. Fold to combine.
  • It will be sticky, but dollop 8-9 dough balls on your baking sheet.
  • Bake for 9-10 minutes, remove from the oven, and flatten gently with a fork.6.
  • Sprinkle each with a bit more salt. Once cooled, store in the fridge.

Notes

Once baked, my favorite way to eat these is cold, straight from the fridge!

This article is for informational purposes only. It is not, nor is it intended to be, a substitute for professional medical advice, diagnosis, or treatment and we recommend that you always consult with your healthcare provider.

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