Sourdough Protein Waffle Recipe (22 grams protein)
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If you’re looking for a quick and easy sourdough protein waffle recipe, with 22 grams of protein per waffle, you’ve got to try this recipe! Crispy on the outside and soft and fluffy on the inside, you can’t even tell these are high-protein waffles. Top with butter and maple syrup or your favorite nut butter, like peanut butter or almond butter, for extra protein and enjoy.

Not only are these waffles delicious, but they are also full of protein, thanks to the addition of eggs, greek yogurt, and protein powder. Change up the flavor with different flavors of greek yogurt or protein powder, and enjoy these waffles all year long.
Healthy Breakfast Recipes with Sourdough
Starting your day off with a high-protein breakfast can help keep your blood sugar stable, prevent energy crashes, help you stay full for longer and help repair and build muscle. I love starting out the morning with a satisfying and healthy breakfast. From sourdough protein pancakes, sourdough protein muffins with fresh berries, to a sourdough egg bake, I have several delicious, easy meal prep options to start your day off right.

Selecting a protein powder
Not all protein powders are the same and the type of protein powder you use can impact the flavor and texture of these waffles. My favorite protein powder is from Just Ingredients (use my link for 10% off). Some of my favorite flavors from them include vanilla bean and chocolate coconut. I love this brand of protein powder because it has simple, clean ingredients. There is no added sugar or sugar alcohol, and it is sweetened with stevia and monk fruit. One scoop of powder has 22 grams of protein from grass-fed non-denatured whey, pea protein, chia seed protein, and grass-fed collagen!

Ingredients
- Sourdough discard – Adds moisture and tanginess to the waffles. If you don’t currently have a sourdough starter check out my recipe to make one in just 2 weeks.
- Plain greek yogurt – The greek yogurt adds moisture and additional protein. I had non-fat on hand so that is what I used in the recipe, but using one with fat will add more moisture. You could swap out plain for vanilla or another flavor, if preferred.
- Eggs – To bind the waffles (plus adds more protein!)
- Milk – You can use any type but using one with more fat, like whole milk, will make the waffle more moist.
- Protein powder – I use Just Ingredients Protein Powder.
- Baking powder & baking soda – Both of these ingredients help give the waffles a fluffy rise.
- Salt – Any type will work.
- Flour – Ideally use unbleached all-purpose flour. I use Sunrise Flour Mill All-Purpose Flour in this recipe.

Sourdough Protein Waffle mix-ins
You can really customize this recipe to include your favorite flavors and mix-ins. For a fall inspired waffle, try using Apple Cider Protein Powder, 1 cup of apples and a teaspoon of cinnamon in your batter. Or for a light, citrus flavor, try Vanilla Protein Powder, 1 cup of blueberries and zest of one lemon. Or if you are a chocolate lover try Chocolate Coconut Protein Powder and some chocolate shavings. The possibilities are endless, so have fun with it. Try adding different fruits such as bananas, raspberries, or blackberries or go sweet with chocolate chips and nuts.
Instructions
Preheat: Plug in the waffle maker and start preheating it while mixing the batter.
Mix the wet ingredients: In a bowl, I like to use a batter bowl with a spout, whisk together the sourdough discard, eggs, milk, and greek yogurt.
Add in the dry ingredients: To the bowl add the protein powder, baking powder, salt, baking soda, and all-purpose flour. You can mix these in a separate bowl before adding the mixture, if preferred, but I find it easier to just add them directly. Mix the batter until just combined, don’t overmix. The consistency of the batter should be thick. A thicker batter will ensure it does not run off the waffle iron when making these.

Bake: Spray the waffle maker with non-stick cooking spray. Pour batter onto the waffle maker. This recipe makes 4 waffles so pour about one fourth of the batter at a time, baking in batches. All waffle irons are slightly different, so follow the instructions on yours to bake.

Serve and enjoy!
Can Sourdough Protein Waffles be made ahead of time?
Yes! These waffles will last in the fridge for about a week if stored in an airtight container. Before placing in the refrigerator, ensure the waffles are completely cooled. These are a great option to make ahead of time for breakfast throughout the week, just pop in the toaster oven or microwave to heat up and enjoy.
Alternatively, you can also freeze the Sourdough Protein Waffles so you always have a quick, high-protein breakfast on hand! Be sure the waffles are completely cooled first. To freeze, add the waffles to a sheet pan in a single layer and place them in the freezer for an hour. Then take the frozen waffles and add them to a freezer bag for storage. Alternatively, add the waffles directly to a freezer bag with parchment paper in between each to ensure they don’t stick together.

Sourdough Protein Waffles
Equipment
Ingredients
- 120 grams sourdough discard 1/2 cup
- 120 grams plain greek yogurt 1/2 cup
- 3 large eggs 150 grams
- 60 grams milk 1/4 cup
- 2 scoops protein powder 65 grams
- 9 grams baking powder 2 teaspoons
- 3 grams salt 1/2 teaspoon
- 3 grams baking soda 1/2 teaspoon
- 140 grams all purpose flour 1 cup
Instructions
- Preheat the waffle iron.
- Whisk together sourdough discard, greek yogurt, eggs, and milk.120 grams sourdough discard, 120 grams plain greek yogurt, 3 large eggs, 60 grams milk
- Mix in protein powder, baking powder, salt, baking soda, and flour until just combined.2 scoops protein powder, 9 grams baking powder, 3 grams salt, 3 grams baking soda, 140 grams all purpose flour
- Fold in any mix-ins.
- Spray the waffle iron with non-stick spray. Add ¼ of the batter to the waffle iron and cook until golden brown. Repeat with the remaining batter.
- Top with butter and maple syrup.
Notes
- Only mix the batter until just combined.
- Switch up the protein powder flavor or add a flavored yogurt to switch things up.
- For the milk and greek yogurt you can use non fat or full fat. Although, full fat will create a more moist waffle.
Could you use active starter and long ferment the dough?
I did ferment it overnight. I added the protein powder, baking soda, and baking powder right before I planned on making them. I added in a little bit of chocolate chips for sweetness. Turned out pretty good- made a lot of mini waffles 🧇
Do you think you could substitute protein powder for collagen powder?
I made this recipe but added maple syrup for some sweetness. I compensated with a little extra flour. Turned out great.
These are really good. Batter was super thick due to no-fat Greek yogurt and 2% milk (also used ultra filtered Fairlife for more protein) and waffles were drier and dense. I added more milk before second batch and that helped.
Would love to see the protein breakdown of your ingredients as mine only topped out at 9 grams per waffle. Probably my protein powder was not as high as yours.
Thanks!
Thanks for the feedback! All protein powders behave a little differently when baked which makes protein recipes a little tricky as far as finding the right texture. I’m glad you found what works well for you. That’s a good idea to add in the protein breakdown of the protein powder to the post. I use Just Ingredients protein powder which has 22 grams per scoop.
Quick and easy! Delicious! Thank you!
I was so happy to find this recipe so I could ramp up the protein in our morning waffle tradition. I used Juice Plus Complete vanilla powder and some unflavoured beef gelatin for the protein powder. The JP powder is a bit higher in sugar than I’d like but with no other added sugar it’s certainly still a win. I measured ingredients by weight and used leftover whey from making yogurt in place of the milk. Once everything was combined I added more whey until the consistency was what I like for waffles. Cooked in mini waffle irons and my kids loved them and filled up pretty quick. I have also doubled the recipe successfully. Thanks for a great recipe! It’s a new favourite for us.