Keto Protein Chaffle with Salted Caramel Collagen Syrup
Published October 27, 2019 • Updated March 14, 2026
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I load this keto protein chaffle with a full scoop of protein powder and top it with a salted caramel collagen syrup that tastes like actual dessert. The perfect post-workout breakfast when you need something filling that keeps you satisfied past noon.
I started making this because I wanted a breakfast that held me through a morning workout and the hours after it. Most keto waffles taste fine but leave me reaching for something else by 10am. Adding a scoop of protein powder to a basic chaffle batter was the change that fixed it.
The salted caramel syrup is what I look forward to most. Brown the butter (wait for that nutty aroma), whisk in powdered erythritol and collagen, then stir in heavy cream. Here’s what took me dozens of batches to learn: pull the syrup off heat before it looks done. Let it sit 60-90 seconds and it thickens on its own into something that clings to each waffle well instead of pooling on the plate. The collagen adds another protein boost on top of what’s already in the chaffle, so you’re getting a serious amount from both components.
The batter is four ingredients: egg, shredded mozzarella, protein powder, and baking powder. No almond flour, no coconut flour needed. The protein powder handles the structural work those flours usually do and tones down the eggy taste that puts some people off plain chaffles. I’ve tested vanilla protein powder against unflavored, and vanilla changes the entire recipe. With the salted caramel syrup drizzled over a vanilla-flavored chaffle, this crosses from breakfast straight into dessert. I switched to vanilla permanently after one batch.
For anyone eating this after a workout, the macro profile is the real draw. Protein from the egg, mozzarella, protein powder, and collagen, all on one plate. I eat mine within 30 minutes of finishing a workout, and the combination keeps me satisfied well into the afternoon without any crash or snacking.
If you want more high-protein breakfasts, my high protein french toast casserole is another one I keep in rotation. For lighter mornings I make meal prep breakfast bowls or almond flour pancakes. When my family wants something sweet on weekends, keto french toast is the one that wins every time.
What keeps me coming back to this version is speed. The waffle maker preheats while I mix four ingredients in a bowl. Each chaffle cooks in 3-5 minutes. The syrup takes maybe two minutes on the stove. Fridge to plate in under 15 minutes. I’ve been making these since I first started experimenting with chaffles, and this is the one I reach for most.
How to make protein waffles
- Mix the batter. Whisk egg, shredded mozzarella, protein powder, and baking powder together in a bowl. Takes about 30 seconds.
- Cook in the waffle maker. Pour batter into the center and close. Let it cook until the steam stops and the chaffle is golden brown, about 3-5 minutes.
- Top and serve. Drizzle with the salted caramel collagen syrup and butter, or spread on peanut butter.
What is a protein chaffle?
A keto chaffle is a low-carb waffle made from egg and cheese. I use mozzarella here, but cream cheese (1 oz) gives a slightly denser texture and cheddar adds more savory flavor. Both work well.
Adding protein powder gives it real substance and tones down the eggy or cheesy taste that can be strong in a plain chaffle. It also means no almond flour or coconut flour needed. I look for protein powders that are zero carb or close to it. If you want something lighter and fluffier in a different style, try my keto souffle pancakes.
For a lower fat option, use two egg whites instead of the whole egg.
Explore 684+ keto recipe videos with step-by-step instructions, tips, and tricks to make keto easy.
Keto Protein Waffles Ingredients
1 egg -
1/2 cup shredded mozzarella cheese
-
1 scoop low-carb protein powder
-
1/4 teaspoon baking powder
Salted Caramel Collagen Syrup Ingredients
-
2 tablespoons unsalted butter
-
1 tablespoon powdered erythritol
-
1 scoop collagen powder
-
1/4 cup heavy cream
-
1/8 teaspoon salt
Step by Step Instructions
Step by Step Instructions
Preheat waffle maker
Preheat waffle maker to medium high heat. Whisk together all of the ingredients for the protein waffles – egg, shredded mozzarella cheese, protein powder and baking powder.
Pour & cook
Pour protein chaffle batter into the middle of the waffle maker. Close and let cook for 3-5 minutes or until waffle is golden brown and set. If using a mini waffle maker, only pour one third the batter.
Remove from heat
Once finished cooking, remove chaffle from the waffle maker and repeat with remaining batter.
Salted caramel syrup instructions
To make the salted caramel syrup, melt butter in a sauce pan over medium heat. Heat until butter get browned and lets off a nutty aroma.
Nutrition disclaimer
The nutrition information provided is an estimate and is for informational purposes only. I am a Doctor of Pharmacy (Pharm.D.); however, this content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or other qualified health provider before making any lifestyle changes or beginning a new nutrition program.
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Get My Macros + Recipes →Frequently Asked Questions
Does protein powder flavor matter for this recipe?
I've tested both vanilla and unflavored in this recipe, and vanilla changes everything. The salted caramel syrup on a vanilla base crosses into dessert territory. Unflavored gives you a more neutral chaffle that works with savory toppings, but for the sweet version with the syrup, I use vanilla every time now.
How do I keep chaffles from sticking to the waffle maker?
I don't spray or grease mine at all. The mozzarella releases enough oil as it cooks to prevent sticking. The real trick is patience: wait until the steam stops coming out of the waffle maker before opening it. If you try to open it too early, the chaffle tears apart. Once the steam stops, it releases clean every time.
How do I know when the salted caramel syrup is done?
I pull it off heat before it looks done, which sounds wrong but works every time. If you wait until it looks thick on the stove, it turns into candy once it cools. Take it off the heat, let it sit 60-90 seconds, and it thickens on its own into the right consistency. That rest period is the step that makes the whole recipe come together.
Can I use more protein powder instead of collagen in the syrup?
I wouldn't recommend it. Protein powder doesn't dissolve the same way collagen does in a butter-cream base. It clumps and changes the texture. Collagen disappears into the syrup completely. If you don't have collagen on hand, just make the syrup without it and you still get the salted caramel flavor. I keep a tub of Vital Proteins around specifically for this.
What collagen brand do you use for the syrup?
I use Vital Proteins. I've tried cheaper brands and they leave a noticeable aftertaste in the syrup that I don't love. In something this simple with only a few ingredients, the quality of the collagen really shows. Vital Proteins dissolves clean and doesn't add any off-flavors.
How should I store leftover chaffles and syrup?
I refrigerate the chaffles in an airtight container for up to 3 days or freeze for up to a month. For freezing, I flash freeze them on a sheet pan first so they don't stick together, then transfer to a freezer bag. My toaster is my favorite reheating method. They come out crispy again. The syrup keeps in the fridge for about 5 days. It hardens when cold, so I microwave it in 30-second intervals to get it pourable.
Can I make these without a waffle maker?
I've tried them in a skillet and they cook fine, but you lose the waffle shape and the crispy wells that hold the syrup, which is half the point. A mini waffle maker is under $15 and worth it if you plan on making chaffles regularly. That said, if you're in a pinch, I pour the batter into a hot nonstick pan, flatten slightly, and cook 2-3 minutes per side.
Never made chaffles before but mine actually turned out like the photos! Can I sub more protein powder for the collagen if I don't have any?
Used vanilla protein powder instead of unflavored and the chaffle tasted like an actual dessert waffle, not a breakfast. The salted caramel syrup on top of that vanilla base hit so differently I had to go back for a second bite just to make sure. Vanilla powder only from here on.
Vanilla hits different than plain on this one. The caramel syrup on a vanilla base crosses into actual dessert. Switching.
These came out great this morning but I had a hard time getting them out in one piece. Do you spray the iron between each one, or does the butter in the batter handle the sticking?
No spray needed. The mozzarella releases enough oil as it cooks that it handles itself. The real trick is waiting until the steam stops completely before you open it - if you lift it too early it'll tear every time.
Pull the collagen syrup off heat before it looks done, let it sit 60-90 seconds, and it thickens into something that actually clings instead of pooling on the plate. Took me two attempts to figure that out, and now it's the step that makes the whole recipe.
That carryover thickening catches everyone the first time. Two attempts is actually pretty good, I've seen people chase it on the heat way longer and wonder why it turns into candy.
First time making a chaffle with protein powder and I half expected it to stick or turn out gummy, but the edges crisped up just right. The salted caramel syrup is what got me though. I've been pouring it on everything since. Do you think any collagen powder works or does the flavor actually change depending on the brand?
Brand changes the flavor more than you'd think. Some have a noticeable aftertaste in the syrup, the cheaper ones especially. I use Vital Proteins for the cleanest finish.
My son walked in, saw the salted caramel syrup drizzled over it, and immediately asked what bakery I'd ordered from. I told him it was butter and collagen powder and he stared at me like I was speaking another language. He doesn't do keto, doesn't care about any of that, and still ate mine while I was flipping the second one. I had to make a whole third chaffle on a Tuesday morning just to get one for myself. Beginner mistake, I know, but now I'm doubling the batch every time.
Ha, the 'what bakery' moment. Non-keto people are the honest judges, and when someone eats yours while you're still flipping the second one, that's the review. Always double.
I had completely written off sweet breakfasts when I went keto back in December. The salted caramel syrup changed that. I drizzled it over and just stood there because it tasted like something I used to order every Sunday at a place near my old apartment and stopped letting myself have. Giving it four stars because the batter stuck the first time and I had to pry it out, but once I learned to wait for the steam to stop it came out perfect.
Steam is everything with chaffles. Wait it out and it releases clean every time, no prying. And that syrup bringing back a Sunday memory like that - that's the best version of a recipe doing its job.
Making a batch of these on Sunday has completely changed my weekday mornings. The chaffles reheat in 2 minutes in the toaster and still get crispy on the outside, and I keep a jar of the salted caramel syrup in the fridge all week. 48g of protein before 8am is not something I thought I'd ever say.
Sunday batch cooking with these is so smart. The syrup keeps way longer than a week too if you need to stretch it.