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Home » Recipes » Cookies

Single Serve Oatmeal Protein Cookie – Big and Good!

Published: Dec 21, 2021 · Last Modified: Feb 22, 2025 by Haylee Jane Monteiro · This post may contain affiliate links

A really big and good Single Serve Oatmeal Protein Cookie for a quick dessert or post workout treat. This oatmeal protein cookie for one is gluten free, sugar free and can easily be made Vegan too!

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A really big and good Single Serve Oatmeal Protein Cookie for a quick dessert or post workout treat. This oatmeal protein cookie for one is gluten free, sugar free and can easily be made Vegan too!

Okay not lying, I did not expect this single serve protein cookie with oats to turn out this good! I have a ton of single serving cookie recipes, but none like this.

Proper chewy oatmeal cookie but made with protein powder instead of sugar, and no butter and such either! Actually a healthy oatmeal cookie with all those gains!

Ingredients for Single Serve Oatmeal Protein Cookie Recipe

This healthy single serve oatmeal protein cookie has just a 6 simple ingredients, and has no butter or oil and no sugar either! 

  • Rolled Oats
  • Vanilla Protein Powder for healthy, whey protein cookie that’s also sugar free
    I used Quest Nutrition Vanilla Milkshake protein powder here since its a whey-caesin blend and great for baking.
  • Unflavored Protein Powder to replace some of the flour (and carbs) in the recipe for a slightly low calorie protein cookie. Quest Nutrition whey-caesin again here.
  • An Egg White for extra protein
  • Some Cashew Butter: I used American Dream Nut Butter Dunk a Spoon Cashew Butter that’s higher in protein and lower in fat than normal ones!
    ADNB also has a lot of other cashew butter flavors that would go perfect here. Code HAYLSKITCHEN gets you a discount here! 
  • Baking Powder

And then of course the mix-ins:

  • Fresh Cranberries
  • Chocolate Chips; I use the chips from Lakanto here (HAYLSKITCHEN for a discount here too). 
  • Raisins or Dried Cranberries
  • Walnuts
A really big and good Single Serve Oatmeal Protein Cookie for a quick dessert or post workout treat. This oatmeal protein cookie for one is gluten free, sugar free and can easily be made Vegan too!

Tips for Single Serving Oatmeal Protein Cookie

This oatmeal protein cookie is a really easy dessert for one, but here’s some tips to get it perfect!

  • Make sure you use Rolled Oats and NOT instant or quick oats! The latter are too fine and will make the mix to soggy.
  • Use completely runny Cashew Butter so it mixes well with the oat mixture.
  • Mix the ingredients completely so you get a thick cookie dough.
  • Don’t let the oatmeal cookie mixture sit out too long or it will become too dense and make the cookie tough.

Store Oatmeal Protein Cookie for One

This recipe makes a great oatmeal protein cookie for one, and is best had fresh, but you can store it.

Keep the low calorie oatmeal cookie in an airtight container and keep on the countertop for up to 2 days, or fridge 5 days.

To freeze healthy single serve oatmeal protein cookie cookie, place in freezer-safe zipper bag and keep 1-2 months; Don’t forget to thaw before eating!

A really big and good Single Serve Oatmeal Protein Cookie for a quick dessert or post workout treat. This oatmeal protein cookie for one is gluten free, sugar free and can easily be made Vegan too!

Alternates for this Single Serving Healthy Oatmeal Cookie Recipe

I recommend making this healthy, low calorie single serve oatmeal cookie using the protein powder and other ingredients and products listed – since it gives the best results.

If you need other options for the flours and such, here’s some alternatives:

  • Unflavored Protein Powder: Oat flour or Almond flour (also 1½ Tbsp)
  • Egg Whites: 2 tablespoon aquafaba (chickpea liquid). I haven’t given this a try yet though.

A Vegan Protein Oatmeal Cookie Recipe

This single serving low calorie oatmeal cookie recipe has can easily be made Vegan with the right ingredients

For the perfect Vegan oatmeal protein cookie for one, make sure you use a plant based protein powder and aquafaba instead of egg whites.

More Single Serve Protein Cookie Recipes to Try:

  • Protein Sugar Cookie Recipe
  • Chocolate Lava Pumpkin Protein Cookie
  • Chocolate Protein Cookie in the Microwave
  • Chocolate Lava Protein Cookie for One
  • Cheesecake Stuffed Red Velvet Protein Cookie
  • Biscoff Stuffed Protein Cookie
  • Single S’mores Protein Cookie

More Oatmeal Protein Cookie Recipes

  • Butterscotch Oatmeal Protein Cookie
  • Chocolate Chip Sweet Potato Protein Oatmeal Cookies
  • Edible Protein Oatmeal Cookie Dough
  • Air Fryer Protein Cookie for One

Single Serve Oatmeal Protein Cookie

5 from 1 vote
Print recipe Pin Recipe
Prep Time5 minutes mins
Cook Time9 minutes mins
Total Time14 minutes mins
Servings: 1 5-6″ cookie
Calories: 180kcal
Course: Breakfast, Dessert, Post-Workout
Cuisine: American
A really big and good Single Serve Oatmeal Protein Cookie for a quick dessert or post workout treat. This oatmeal protein cookie for one is gluten free, sugar free and can easily be made Vegan too!

Ingredients

  • ¼ cup Rolled/Instant Oats, 22g
  • 2 tablespoon Vanilla Protein Powder, 11g
  • 1 tablespoon Unflavored Protein Powder, 5g, see post for subs
  • 1 tablespoon Peanut Butter Powder, 6g, see post for subs
  • ¼ teaspoon Baking Powder
  • 2 tablespoon Unsweetened Applesauce

Mix-ins:

  • ½ tablespoon Cranberries
  • Other options: Chocolate Chips, Dried Fruit, Nuts

Instructions

  • Preheat oven to 350°F and line a baking sheet with parchment paper.
  • In a bowl, combine oats, vanilla protein powder, unflavored protein powder, peanut butter powder and baking powder.
  • Add in unsweetened applesauce (1 tablespoon at a time) and mix. Mixture should be smooth, but still thick.
  • Fold in cranberries, reserving a few.
  • Transfer cookie mixture onto baking sheet, spread with spoon and shape into 5-6” circle.
  • Bake about 9 minutes – top should be cooked and dry to touch, but soft.
    Let cool for a few minutes and enjoy!

Notes

  • Nutrition value is calculated using products recommended below, and includes 1½ tablespoon fresh cranberries.
  • See post for alternate ingredients, tips and storage options.
Product Recommendations:
  • Quest Nutrition Vanilla Milkshake Protein Powder
  • Quest Nutrition Multi-purpose Mix Protein Powder
Nutrition:
  • Yield: 1 6” cookie | Serving size: 1
  • Calories: 180 cal
  • Fat: 3g | Saturated fat: 0g
  • Carbohydrates: 22.4g | Fiber: 4.3g | Sugar: 4.1g
  • Protein: 16.8g

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Comments

  1. Lisa Yanniello says

    June 22, 2023 at 8:55 am

    5 stars
    I am trying to find a oatmeal raisin protein powder recipe for my son in law that doesn’t have peanut butter, in it because he is allergic to nuts, coconut and bananas.
    Can I substitute something else for the nut butter?

    Reply
    • Haylee Jane Monteiro says

      August 06, 2023 at 1:10 am

      Hi Lisa! I’m so sorry about that.

      You could try Tahini or Sunflower seed butter.

      Reply
  2. Heather says

    April 09, 2022 at 5:06 pm

    What can you use instead of protein powders? I know oat flour for unflavored.but what for vanilla?

    Reply
    • Haylee Jane Monteiro says

      April 13, 2022 at 8:49 am

      Hi Heather!

      I’m so excited you want to try out this recipe.

      I haven’t tried this using anything outside of protein powder, but a good one might be 0 calorie monkfuit sweetener in place of the vanilla protein powder.
      I’d recommend the Golden from Lakanto (https://www.lakanto.com/collections/sweeteners/products/lakanto-golden-sugar-free-sweetener); the code HAYLSKITCHEN gives you a discount too.

      p.s. you might need to add extra oat flour in this case and judge by texture so the mixture isn’t too liquidy.

      Reply

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Hi, I'm Haylee!

I use my passion for baking (and my sweet tooth) to create healthy, high protein, low fat and sugar free desserts and sweet treats that are actually delicious.

Come join me in Hayl's Kitchen and let's eat high protein, sweet and guilt free!

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