These sugar cake protein cookies are soft, cakey, and made with vanilla protein powder, sugar-free yellow cake mix, Greek yogurt, applesauce, coconut flour, egg whites, and rainbow sprinkles.
They taste like a mix between a soft sugar cookie and birthday cake. The texture is light, tender, and a little cakey instead of crisp or chewy.
Each cookie is about 50 calories with 5g of protein, depending on the exact protein powder and cake mix you use.
This is a good recipe when you want a small sweet bite that still gives you some protein. The batch makes 9 cookies, so they are easy to keep in the fridge for a quick snack or dessert.
If you're looking for other Cookie hits, try my Chewy Vintage Cherry Coconut Cookie Bars Swiss Treats, High Protein Mint Chocolate Chip Cookie Dough, or Giant Protein Chocolate Chip Cookie.
Why These Sugar Cake Protein Cookies Work
These cookies work because the cake mix gives the recipe flavor and structure, while the protein powder and coconut flour help thicken the batter.
The Greek yogurt and applesauce are important too. Lower-fat protein cookies can dry out fast, so the yogurt and applesauce keep the centers soft without needing butter or oil.
The batter is thicker than cake batter but softer than a traditional cookie dough. You scoop it into mounds, bake until set, and let the cookies cool on the pan so they finish firming up.
The final texture is soft, cakey, and light.
Why You'll Love This Recipe
- Only 50 Calories Each: A small sweet cookie that is easy to fit into your day.
- 5g Protein Per Cookie: The protein powder and Greek yogurt help boost the protein.
- Soft Cakey Texture: These are pillowy cookies, not crunchy sugar cookies.
- Birthday Cake Flavor: Yellow cake mix and sprinkles give them that funfetti-style flavor.
- Easy Batch: The recipe makes 9 cookies with simple mixing and baking.
- Great Fridge Snack: Store them chilled and grab one when you want something sweet.
What Makes These Different From Regular Sugar Cookies?
Regular sugar cookies are usually made with flour, butter, sugar, eggs, and vanilla. They are richer, sweeter, and usually higher in calories.
These sugar cake protein cookies are different. They use protein powder, sugar-free cake mix, Greek yogurt, applesauce, and coconut flour.
That gives them more protein and a lighter texture, but it also means they do not bake like a classic buttery sugar cookie. They are softer, thicker, and more cake-like.
Think of them as mini birthday cake protein cookies instead of cut-out holiday sugar cookies.
Ingredient Deep Dive & Strategy
Vanilla Whey/Casein Protein Powder: Adds protein and helps thicken the batter. A whey/casein blend usually gives a better texture than pure whey.
Sugar-Free Yellow Cake Mix: Gives the cookies their birthday cake flavor, sweetness, and soft texture.
Coconut Flour: Helps absorb moisture and keeps the cookies from spreading too much. A little goes a long way.
Plain Nonfat Greek Yogurt: Adds moisture and protein while keeping the cookies soft.
Egg Whites: Help bind the batter and keep the cookies lighter.
Unsweetened Applesauce: Adds moisture and helps prevent the cookies from turning dry.
Rainbow Sprinkles: Give the cookies their funfetti look and sugar cake feel.
Instructions for the Funfetti Protein Cookies
1. Preheat the oven: Set your oven to 350°F (175°C) and line a baking sheet with parchment paper to ensure no sticking.
Pro Tip: Make sure the oven is fully preheated. Because these cookies are low in fat, they rely on rapid heat to set the structure before the moisture evaporates.
2. Whisk the dry ingredients: In a medium mixing bowl, combine your protein powder, sugar-free yellow cake mix, and coconut flour.
Pro Tip: Use a wire whisk to break up any clumps in the cake mix or protein powder, as these can create pockets of dry powder in the final cookie.
3. Mix the wet ingredients: In a separate smaller bowl, whisk together the Greek yogurt, egg whites, and applesauce until smooth.
4. Combine and fold: Pour the wet mixture into the dry ingredients and stir until just combined. Fold in the rainbow sprinkles.
Pro Tip: Do not over-mix the batter. The more you stir, the more gluten will develop, which can make the cookies tough rather than tender.
5. Scoop and bake: Scoop the batter into 9 uniform mounds (about 1.5 tablespoons each) onto your prepared baking sheet. Bake for 12–13 minutes, or until the tops are set and slightly golden.
Pro Tip: Let the cookies cool completely on the pan. They will continue to firm up as they cool due to the nature of the coconut flour and protein blend.
Best Texture Tips
For the best sugar cake protein cookies:
- Weigh the coconut flour if possible.
- Use a whey/casein blend protein powder.
- Do not overmix the batter.
- Do not overbake.
- Let the cookies cool on the pan.
- Press the tops down before baking if you want a flatter cookie.
- Store them in the fridge so they stay fresh.
Troubleshooting & FAQ
Why are my protein cookies rubbery?
This usually happens from using pure whey protein, overmixing, or overbaking. A whey/casein blend usually gives a better texture.
Why is my batter too runny?
Let it sit for 2 to 3 minutes. Coconut flour absorbs moisture as it rests. If it is still too loose, add a tiny bit more coconut flour.
Why is my batter too thick?
Your protein powder or coconut flour may have absorbed more moisture. Add a small spoonful of applesauce or Greek yogurt until the batter becomes scoopable.
Do these cookies spread?
Not much. These are soft cakey cookies, so they hold their shape more than classic sugar cookies. Press them down before baking if you want them wider.
Can I use regular yellow cake mix?
Yes. Regular yellow cake mix works, but the sugar, carbs, and calories will change.
Can I use a whole egg instead of egg whites?
Yes, but the fat and calories will increase slightly. The texture may also be a little richer.
Can I use Greek yogurt only instead of applesauce?
You can, but the texture may be slightly tangier and less sweet. Applesauce helps with moisture and sweetness.
Can I skip the coconut flour?
I would not skip it completely. Coconut flour helps thicken the batter. If you do not have it, you may need more cake mix or a different flour, but the texture will change.
Are these cookies gluten-free?
No, not as written. The sugar-free cake mix contains gluten unless you use a gluten-free cake mix.
Can I freeze these cookies?
Yes. Let them cool completely, then freeze in an airtight container or freezer bag for up to 30 days.
Substitutions Table
| Component | Swap Options |
| Sugar-free yellow cake mix | Regular yellow cake mix (macros will change) |
| Nonfat Greek Yogurt | Sour cream (full fat, adjust macros) |
| Egg whites | 1 small whole egg (will result in richer color) |
| Rainbow sprinkles | Dark chocolate chips or mini white chocolate chips |
Storage & Reheating
Store the cookies in an airtight container in the refrigerator for up to 5 days.
Because they are made with Greek yogurt and applesauce, I prefer storing them chilled instead of leaving them on the counter.
To freeze, let the cookies cool completely, then freeze in a freezer-safe bag or container for up to 30 days.
Thaw at room temperature for about 20 minutes, or microwave one cookie for a few seconds if you want it soft and warm.
You Might Also Like
If you want to keep the baking streak going, try these other favorites:
- High Protein Amaretti Cookies The Amaretto Method
- Grandmas Gumdrop Cookies
- 3 Ingredient Pineapple Protein Cookie
The Final Verdict & Share
These sugar cake protein cookies are soft, cakey, and easy to make when you want a small birthday cake-style cookie with some extra protein. The cake mix gives them flavor, the Greek yogurt and applesauce keep them soft, and the sprinkles make them fun. Bake a batch, keep them in the fridge, and tag me if you try them.
Sugar Cake Protein Cookies
Ingredients
- 30 g Vanilla Whey/Casein Blend Protein Powder
- 50 g Sugar-free yellow cake mix contains gluten
- 14 g Coconut flour
- 70 g Plain nonfat Greek yogurt
- 50 g Egg whites
- 60 g Unsweetened applesauce
- 10 g Rainbow sprinkles
Method
- Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
- In a medium mixing bowl, whisk together the vanilla protein powder, sugar-free yellow cake mix, and coconut flour until combined.
- In a separate bowl, whisk together the Greek yogurt, egg whites, and applesauce until smooth.
- Pour the wet mixture into the dry ingredients and stir until just combined. Gently fold in the rainbow sprinkles.
- Scoop the batter into 9 uniform mounds (about 1.5 tablespoons each) onto your prepared baking sheet. Bake for 12–13 minutes, or until set.
Nutrition
Notes
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One response to “Sugar Cake Protein Cookies (High-Protein Recipe)”
super easy
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