Birthday Cake Protein Cookies

These protein cookies are easy to make and need just 4 ingredients! Perfect between meals or a healthy dessert, they are secretly low carb and contain NO sugar. 2 grams net carbs.

protein cookies

When it comes to high protein snacks and desserts, I love peanut butter protein bars, chocolate protein bars, and these protein powder cookies

This protein cookies recipe was inspired by Quest protein cookies I saw at the grocery store. They were made with whey protein and had no sugar, barely any carbs, and claimed to taste like birthday cake.

Well, being the skeptic I am, I decided to try them out and was NOT impressed that it also came with a $5 pay tag. Unfortunately, I was at the checkout and hungry, so went through with buying it.

While the protein cookie was initially delicious, it also left a lingering artificial sweetener taste. 

Birthday Cake Protein Cookies

My homemade protein cookies taste like birthday cake and need just 4 ingredients. Unlike the store bought ones, you can actually pronounce them. In fact, you probably have them in your cupboard right now. 

Taste wise, they are a mix between my peanut butter cookies and almond butter cookies, but less nutty and more protein. They have a slight vanilla flavor, with some sprinkles added in for fun. The texture though is JUST like any decadent and bakery style cookie- soft, thick and chewy.

birthday cake protein cookies

How to make protein cookies

The Ingredients 

  • Peanut Butter– Smooth and drippy peanut butter, with no added sugar. Avoid using crunchy peanut butter, as you’ll find the mixture harder to mix together. If you’d like to use another nut or seed butter, feel free to do so, like almond butter or sunflower seed butter. 
  • Granulated Sweetener– Any granulated sweetener will work. I’ve tried it with monk fruit sweetener, erythritol, and also coconut palm sugar. 
  • Protein Powder– A must for any good protein cookie recipe! Use vanilla protein powder, to give the birthday cake flavor!
  • Egg OR ground chia seed– Room temperature eggs OR, if you’d like to keep it vegan, use ground chia seed.
  • Sprinkles– optional, but adds a fun touch! 

The Instructions

Start by mixing together all your ingredients, except for your sprinkles. Form 12 balls of cookie dough and cover in sprinkles, before placing onto a cookie sheet or baking sheet. Gently press on each ball and bake for 12-14 minutes, or until the edges are beginning to brown. Remove from the oven and let cool on the baking sheet completely. 


Which protein powder is best for baking? 

Not every protein powder is created the same. Some are thicker than others, some are finer than others and some have different additives in it. As a general rule of thumb, all protein powders can work, but they will leave different textures. Here are the more mainstream protein powders and what texture and flavor profiles they have.

  • Brown Rice Protein Powder– Earthy in flavor and texture, this vegan protein powder keeps the cookies soft and chewy. Be sure to use a vanilla flavored one, otherwise, the cookies will be very bland. 
  • Casein Protein Powder– My favorite protein powder for baking. Casein protein powder never dries out baked goods, and has the most delicious flavor. Casein is only suitable for gluten free and keto diets. 
  • Whey Protein Powder– My least favorite protein powder to use, whey is the most natural protein powder, and also the lowest in carbs. However, they are most prone to dry out baked goods, so be sure to keep an eye on it. Whey is great if you want super low carb cookies, or if you follow a keto or paleo diet. 

Tips for making the BEST high protein cookies

  • You MUST enjoy the taste of the protein powder you use. Trust me, many brands out there can have quite the overpowering flavor, and it is not always pleasant. 
  • Do not overbake the cookies, as they continue to cook as they cool down. While the cookies may look a little underbaked, they will firm up beautifully while cooling down. 
  • Peanut Butter can also be overpowering, so if you don’t want peanut butter protein cookies, you can replace this with smooth almond butter. 
  • If you make whey protein cookies, keep a careful eye on the cookies around the 10 minute mark- They can dry out very quickly. 
  • If you opt to make the cookies with the ground chia seed instead of an egg, start with 3 tablespoons. If the cookies aren’t thick enough, add an extra tablespoon of ground chia seed. 
  • For protein chocolate chip cookies, add 1/4 cup chocolate chips.

Storing and Freezing Tips

  • To store: Leftover protein cookies can be stored at room temperature, in a sealed container, for up to 14 days (2 weeks). If you’d like them to keep longer, store them in the refrigerator. 
  • To freeze: Freeze leftover cookies by storing them in a ziplock bag. They will freeze well for up to 6 months. 

homemade protein cookies

More high protein recipes

protein powder cookies

Protein Cookies (4 Ingredients!)

Soft, chewy, and delicious protein cookies made with just 4 ingredients! These high protein cookies recipe takes minutes to make, and are secretly vegan, gluten free, and keto friendly!
5 from 53 votes
Print Rate
Course: Snack
Cuisine: American
Prep Time: 5 minutes
Cook Time: 12 minutes
Total Time: 17 minutes
Servings: 12 Cookies
Calories: 150kcal
Author: Arman



  • Preheat the oven to 180C/350F. Line a cookie sheet or baking tray with parchment paper and set aside.
  • In a small mixing bowl, combine all your ingredients, except for the sprinkles, and mix well, until just combined.
  • Using your hands, form 12 balls of cookie dough and cover in sprinkles, and place on the lined sheet. Bake the cookies for 12-14 minutes, or until the edges begin to brown.
  • Remove from the oven and let cool on the baking sheet completely.


* You can use almond butter or sunflower seed butter.
** Monk fruit sweetener, swerve, or coconut sugar.
*** For the vegan/eggless option, use 3-4 tablespoons ground chia seed- NOT chia eggs. Start with 3 tablespoons and add the 4th only if needed.
TO STORE: Cookies should be stored at room temperature, in a sealable container, for up to 2 weeks. They can also be stored in the refrigerator or freezer, to keep longer.


Serving: 1Cookie | Calories: 150kcal | Carbohydrates: 5g | Protein: 9g | Fat: 12g | Sodium: 116mg | Potassium: 164mg | Fiber: 3g | Vitamin A: 23IU | Calcium: 35mg | Iron: 1mg | NET CARBS: 2g
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    98 thoughts on “Birthday Cake Protein Cookies

    1. I haven’t tried that brand of cookie but I’m already put off by the fact that serving size is for half a cookie. Who wants just half a cookie? I love that you made all the different flavors though- so festive!
      I ate out twice yesterday too… it was an accident, but hey, we porbably spend more than enough time in the kitchen anyways.

    2. Wow, they look pretty damn good! I have only tried one flavour of the Lenny and Larry’s cookies but I have to say they are great. I have wanted to experiment with coconut flour for a while. Do you recommend it as a like for like substitute? A part of me wants to try it but a bigger part of me looks at the price-tag and wonders if it’s worth it.

        1. I think I will get some, been wanting to make protein bites and that sort of thing for ages and so many recipes are coconut flour based!

    3. Well sir, you’ve done it again! I’ve never had an actual L&L cookie…but now I don’t think I have to! I can’t find them near me and I hear they are pretty expensive. Luckily, I have ALL these ingredients (minus the cashew butter)…so I am excited to try these out! And there are so many different versions to try. Awesome job, dude!

    4. I’m going to pretend you made this in honor of my birthday today 😉 Except, you forgot to mail me one. My definition of birthday cake? That’s a tough one since I don’t always have cake on my birthday . I guess it’s whatever free dessert the restaurant decides to send out after we mention 8 times that it’s my birthday.

    5. I once made a mud cake in my grandmas garden… but it wasn’t marbled 😛 And ‘birthday cake’ to me usually means something vanill-y or funfetti-y, but I 100% always go the chocolate route for my birthday – bust out those cookies next!

    6. I will never buy a lenny and larrys cookie ever if I can make one that is DOUBLE the size for the almost the same macros. Giant cookies with good macros is the equivalent of catching a full twisting jaeger on the first try!

    7. Baha I just love your “research outings.” You are like the hella suave detective of the cookie world.
      Also love that you made all nine flavors. This is amazing.
      Also. Mmm tempura.

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