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Home » Recipes » Cakes & Cupcakes

Protein Sugar Cookie Loaf: Easy Healthy Bliss

Published: Nov 28, 2023 · Last Modified: Jan 5, 2025 by Haylee Jane Monteiro · This post may contain affiliate links

Protein Sugar Cookie Loaf is the definition of holiday bliss. Healthy sugar cookie loaf cake made with protein powder and no actual sugar – just the sprinkles.

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Hello, health-conscious food friends!This recipe is not only a magical holiday taste sensation but also a guilt-free indulgence. It’s like eating a sugar cookie and cake and loaf in one – and packed with protein. 

Basically having a treat for the holidays but actually keeping your fitness goals in check. What more could we want this time of year, right?!

Ingredients for Protein Sugar Cookie Loaf:

This recipe for high protein sugar cookie loaf is made with a few simple ingredients; It’s for whole wheat pastry flour, uses protein powder as a sweetener and only very little butter. No oil or eggs needed, and the only sugar comes from the sprinkles.

  • Vanilla Protein Powder: For a sugar cookie cake that’s low sugar; I used Flex brand Vanilla protein powder.
  • Unflavored Protein Powder: To add extra protein and remove some of the carbs. I use Quest Multipurpose protein powder.
  • Whole Wheat Pastry Flour
  • Coconut Flour
  • 1:1 Zero Calorie Sugar Substitute – I use Lakanto, to keep this recipe sugar free;  (code HAYLSKITCHEN for a discount here)
  • Unsweetened Applesauce
  • Hot Water
  • Some Lemon Juice
  • A bit of Melted Butter
  • Baking Soda
  • Vanilla Extract
  • Holiday Sprinkles

For the Protein Frosting for this Sugar Cookie Loaf Cake:

  • Vanilla Protein Powder: I recommend Quest Nutrition Vanilla here since it’s whey-casein and blends well with the yogurt to make a smooth protein frosting.
  • Non-fat Greek Yogurt 

How to make Sugar Cookie Loaf Cake with Protein Powder

This sugar cookie loaf cake uses protein powder as a sweetener, but really isn’t complicated to make. A healthy and easy recipe for Christmas. Here’s what it takes:

Preheat and Prep:

Preheat your oven to 350°F (175°C). Grease and line a standard loaf pan with parchment paper.

Mix Dry Ingredients:

In a large bowl, whisk together the flour, vanilla protein powder, unflavored protein powder, coconut flour, baking soda until well combined.

Combine Wet Ingredients:

In another bowl, mix together the hot water, applesauce, melted butter, and vanilla extract until smooth.

Create Batter:

Gently whisk the wet ingredients into the dry ingredients until a thick batter forms.
Fold in the holiday sprinkles for added fun (just for a second so the color doesn’t bleed too much!).

Bake to Perfection:

Pour the batter into the prepared loaf pan and spread it evenly.

Bake for 25 minutes, cover with foil and bake another 8-10 minutes or until a toothpick inserted into the center comes out clean.

Cool:

Allow the sugar cookie loaf to cool in the pan for 10 minutes, then transfer it to a wire rack to cool.

Frost:

Whisk yogurt and protein powder in a bowl. Spread on top of loaf cake and top with more holiday sprinkles.
Slice into 10 delectable portions.

Tips for perfect Sugar Cookie Protein Bread

This sugar cookie protein bread really is easy to make, but here’s some pointers to keep in mind when baking to get it right.

  • Use whey-casein protein powder since It works well with the ratio of ingredients in this healthy sugar cookie bread dessert recipe.
    Whey-casein absorbs more liquid, and whey absorbs less, so you need to adjust the liquid accordingly.
  • Use melted butter so that it mixes well into the cake batter.
  • Don’t overmix the batter!
    Pour the wet mix into the dry mix and whisk until combined. Don’t over-mix it or too much gluten will develop, which is what will make the cake gummy and dense.
  • Taste the batter and see if you need some extra sweetener. I’d recommend using stevia powder to maintain the consistency of the batter and have low sugar sugar cookie cake.
  • Don’t let the batter sit out too long; Pour immediately into baking pan and bake to avoid any reactions between the ingredients.
  • Don’t over-bake the cake or it will get tough; Remove when the tester/knife comes out just dry, but moist.
  • Let cake cool completely before frosting or the frosting will melt.

For the Frosting in this Macro Friendly Sugar Cookie Loaf:

  • Use whey-casein protein powder since it mixes well with the yogurt.
  • Add milk if necessary; Mix the frosting well first, and then add milk if still too dry.
  • Taste to see if it needs additional sweetener. Add stevia if needed.

How to store Sugar Cookie Loaf Cake?

This sugar cookie loaf cake keeps at room temperature for 2-3 hours. For extended freshness, refrigerate for up to a week or freeze slices for a grab-and-go healthy dessert option.

Fridge: Store Sugar cookie protein loaf in airtight container in the fridge for 4 or 5 days.

Freezer: Slice protein sugar cookie cake, wrap in plastic wrap, and place the pieces in a freezer-safe zipper bag. You can even store the whole cake itself!
Thaw before eating.

Alternatives for Healthy Sugar Cookie Loaf with No Sugar

For the perfect healthy sugar cookie loaf recipe with no sugar, I used protein powder to replace the sugar. I really would recommend using the ingredients and brands listed, but here’s some healthy alternatives you can try.

  • Whole Wheat Pastry Flour: Use All purpose flour or 1:1 Gluten Free Baking Flour in the same amount by weight not cups.
  • Coconut Flour: ½ cup more Flour or ½ cup Oat Flour
  • Melted Butter: Melted Coconut Oil or Dairy Free Butter
  • Lemon Juice: Apple Cider Vinegar or White Vinegar
  • Greek Yogurt: Coconut Yogurt

More High Protein Loaf recipes:

  • Protein Cookie Dough Bread
  • Protein Gingerbread Loaf
  • The Best Protein Carrot Cake Loaf you’ll Ever Have!
  • Double Chocolate Protein Loaf with Nutella

More Sugar Cookie – Inspired Recipes:

  • Protein Sugar Cookie for One
  • Sugar Cookie Protein Bars

Protein Sugar Cookie Loaf: Easy Healthy Bliss

5 from 3 votes
Print recipe Pin Recipe
Prep Time10 minutes mins
Cook Time33 minutes mins
Total Time43 minutes mins
Servings: 10 slices
Calories: 115kcal
Course: Dessert, Snack
Cuisine: American, Christmas
Protein Sugar Cookie Loaf is the definition of holiday bliss. Healthy sugar cookie loaf cake made with protein powder and no actual sugar – just the sprinkles.

Ingredients

  • ½ cup Whole Wheat Pastry Flour, see post for subs, 60g
  • ⅔ cup Vanilla Protein Powder, Flex Whey-casein, 60g
  • ¼ cup Unflavored Protein Powder, Whey-casein, 22g
  • ¼ cup Coconut Flour, 28g
  • 1½ tablespoon Zero Calorie Monkfruit Sweetener, 18g
  • 1½ teaspoon Baking Soda
  • 1 cup + 2 Tbsp Hot Water, 270ml
  • ¾ cup Unsweetened Applesauce, 180g
  • 1 tablespoon Lemon Juice
  • 2 teaspoon Melted Butter, 10g
  • 1 teaspoon Vanilla Extract
  • 3 tablespoon Holiday Sprinkles

Protein Frosting:

  • ½ cup Non-fat Greek Yogurt, 112g
  • ¼ cup Vanilla Protein Powder, Quest Whey-Casein, 22g
  • Stevia Sweetener to taste

Instructions

  • Preheat oven to 350°F and line an 8″x4″ loaf pan with parchment paper.
  • In a bowl, whisk flour, vanilla protein powder, unflavored protein powder, coconut flour and baking soda.
  • In a large bowl, whisk together hot water, applesauce, lemon juice, melted butter and vanilla.
  • Add wet mix to dry, and gently whisk until just combined.
    DO NOT OVER-MIX or protein powder will make the cake dense.
  • Add in most holiday sprinkles and fold.
  • Pour batter into pan (Don’t let the batter sit out).
  • Bake for 25 minutes, cover with foil, bake another 8-10 minutes.
    A tester inserted into the center should come out clean and center of cake springy to touch.
  • Let cool in pan for 10 minutes then transfer to a cooling rack to cool completely.

Frosting:

  • Let cool completely first.
  • In a small bowl combine yogurt and protein powder. Mix until uniform.
    Taste to check sweetness; Add more sweetener if needed.
  • Spread frosting over cake.
    Top with remaining holiday sprinkles.
    Cut into 10 slices

Notes

  • Nutrition value is calculated using products recommended below.
  • See post for alternate ingredients, tips and storage options.
Product Recommendations:
  • Flex Nutrition Vanilla Whey-Casein Protein Powder
  • Quest Nutrition Multi-purpose Mix (Unflavored) Whey-Casein Protein Powder
  • Lakanto Zero Calorie Monkfruit Sugar Substitute
    • Use code HAYLSKITCHEN for a discount off your order
  • Quest Nutrition Vanilla Whey-Casein Protein Powder
Nutrition:
  • Servings: 10 slices | Serving size: 1
  • Calories: 115kcal
  • Fat: 2.6g | Saturated fat: 1.6g
  • Carbohydrates: 14.7g | Fiber: 3g | Sugar: 4.8g
  • Protein: 10.4g

More Recipes You'll Love

  • Healthy Lemon Pudding Cake – A High Protein, Sugar Free Mug
  • Pink Velvet Protein Cake – Beetroot Dessert for Valentine’s Day!
  • Chocolate Marshmallow Protein Cake – It’s like Eating a Drink!
  • Reese’s Protein Loaf – The Real Healthy Magic

Comments

  1. Miriam says

    January 05, 2025 at 10:11 am

    5 stars
    I’m always on the lookout for a macro friendly dessert that I can have in the afternoon with my coffee and this totally nailed it! I really appreciate the recommendation for using a whey casein blend as I’ve made protein baked goods in the past with whey isolate and it’s always been disappointing. The addition of the sprinkles makes it fun and I love the macros for this recipe. I would have never thought to add boiling water to a recipe but it is so moist and I’m sure that helps keep the calories down. This will definitely be on my repeat list!

    Reply
    • Haylee Jane Monteiro says

      January 05, 2025 at 10:14 am

      Using whey-casein really is what makes the difference! I’m SO happy you decided to trust the process and give it a go.

      And yes, that hot water part really surprised me as well, but I believe the reaction of the hot water with the lemon juice and baking soda is what gives this cake its softness.

      Can’t wait to see what you go for next 🙂

      Reply
  2. Hilary says

    November 29, 2023 at 12:55 pm

    5 stars
    New favorite recipie..even my 5 year old and 2 year old loved it!

    Thank you for having the best recipies ever!

    Reply
    • Haylee Jane Monteiro says

      December 01, 2023 at 6:06 pm

      Oh my gosh! You might have just made my day! I’m so happy you – and the kids – loved this recipe Hilary! Can’t wait to see what you try next!

      Reply
  3. Shelby Noshellfish says

    November 28, 2023 at 1:23 pm

    5 stars
    This. Is. GENIUS!! One question: what size loaf pan? 9×5 or 5×4? Or a different size? I plan to add espresso powder to the frosting so it becomes a sugar cookie LATTE loaf! Just like the Starbucks drink! This looks too delicious. Your recipes never disappoint:)

    Reply
    • Haylee Jane Monteiro says

      November 28, 2023 at 4:41 pm

      Hi Shelby.. THANK YOU <3<3
      I used an an 8"x4" loaf pan here.

      That espresso powder idea is amazing!! I might borrow that for a recipe!

      I can't wait to know what you think of this when you try!!

      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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