Healthy Homemade Lemon Protein Bars made with Collagen Peptides - All Purpose Veggies (2025)

Gluten Free

No Bake

Low Carb

Nut Free

These Homemade Lemon Protein Bars made with Collagen Peptides make the perfect healthy dessert or post-workout snack. Soft and chewy on the inside, with just the right balance of sweet and tangy -- these bars are thick and chewy thanks to the collagen peptides which have a lot of great benefits for your hair, skin and joints. Give them a try the next time you're craving a lemony treat!

Here's why I love this recipe

• no-bake
• easy to prepare
• a delicious way to incorporate more collagen peptides into your diet for great hair, skin and joint health.
• high-protein and high-fiber, so it'll keep you fuller longer
• the best dessert alternative & post-workout snack

Ingredients used to make these Collagen Lemon Protein Bars

_{**I've linked some of these ingredients to amazon.com to give you an idea of what they are, but you should also be able to find them in your local grocery store (usually, the natural & organic food section). They are also affiliate links, which means that I earn a commission as an Amazon Associate if you decide to purchase the items. The price will be the same for you, link or no link 🙂}

• Collagen Peptides - Collagen Peptides Powderis a powdered supplement that is made of hydrolyzed collagen peptides — small chains of amino acids that help support healthy hair, skin, nail, bone and joint health. I used Vital Proteins Collagen Peptides Powder for this recipe. You can use other brands of collagen peptides and get the same result.
  • Collagen peptides protein powder is the key ingredient that gives these protein snacks their characteristic cookie-like consistency, and other protein powders won't give you the same chewy texture. Collagen also dissolves very easily compared to other protein powders (i.e. whey, casein, pea, hemp, brown rice, egg protein, etc), so you'll have to add more liquid like almond milk or water to hold the protein dough together if using a replacement.
  • Instead of substituting, check out these protein bar recipes that DON'T require any collagen powder!

• White chocolate chips - you can use any white chocolate chips (or chopped white chocolate), but to make these low-carb, use a lower sugar, stevia sweetened brand instead. For a dairy-free, vegan alternative, try this brand.

More Collagen Powder Recipes (HERE)

Recipe Variations and Optional Add Ins:

• Feel free to experiment with natural flavoring / extracts. Add a teaspoon of vanilla extract (I didn't feel like it was essential so I left it out in this recipe), or other flavorings or extracts, such as lemon extract or almond extract

Just keep in mind that some extracts contain alcohol, and since this is a no-bake recipe, the alcohol won't have a chance to fully evaporate. If serving this to kids, or if you're sensitive to alcohol, be sure to use non-alcoholic extracts or flavorings. Here are some non-alcoholic brands, here: Non-alcoholic peppermint extract, non-alcoholic vanilla extract

COLLAGEN PEPTIDES FAQ:

ARE COLLAGEN PEPTIDES VEGAN?

Most commercial forms of collagen peptidesare not suitable for vegan diets, as collagen is most abundant in skin, nails, bones and ligaments and is thus sourced from animals. The Vital Proteins Collagen Peptides Powder I used in this recipe was sourced from the hides of grass-fed, pasture-raised cows.

Notes on Substitutions

Can I use other Protein Powders if I don't have Collagen Powder?

For most recipes, collagen peptides should not be replaced with other protein powders, and I have not tried using other types of protein powders (i.e. whey, casein, pea, hemp, brown rice, egg protein, etc) in this recipe. This is because Collagen Peptides contribute a different texture to the recipe than other protein powders. In my experience, collagen powder adds a denser, chewier consistency to most protein powder recipes which I think resembles a chewy sugar cookie texture.

If you decide to substitute, just keep in mind that you'll need to add additional liquid (almond milk or water) to this recipe to get the protein dough to hold together. Also, you won't get the cookie-like texture you see in the photos since collagen is what creates that chewy consistency.

Can I substitute other flour Alternatives for coconut flour?

Collagen is a fussy ingredient, so I highly recommend that you DON'T SUBSTITUTE coconut flour in this particular recipe (including almond flour and oat flour). It's not that these flours don't work, but you'll have to be okay with playing around with the entire recipe, like adding more flour, more nut butter and also less liquid -- since coconut flour absorbs 2x 3x more liquid than other flour substitutes.

How to Make this Healthier

• Make this even healthier by adding a handful of nuts, seeds and old-fashioned oats to add texture and nutrition. Even better, add a tablespoon of ground flaxseed, hemp seeds, or chia seeds.

How to Store

• You can keep the protein bars out at room temperature for 1-2 days but for the best texture, it's best to store these protein bars covered in the fridge. They'll be fresh for up to 5-7 days.
• These protein bars also freeze very well! Seal them inside an airtight container or Ziploc bag and freeze them in a single layer so that they don't stick together. I recommend double-bagging if you want to keep out the fridge smell. They can be frozen for up to 4 months.

Final Tips

• Collagen peptides protein powder dissolves very easily compared to other protein powders so try not to add additional water or liquid to the protein dough until the very end. The collagen dough will soften up noticeably during the kneading process, so if you add extra liquid you may end up with a very soft protein dough.
• Make sure you check out the substitution section above if you decide to sub any of the ingredients.

Healthy Homemade Lemon Protein Bars made with Collagen Peptides

All Purpose Veggies

makes 5 protein bars. Please use the 2x 3x adjustable servings button for larger batches

Nutrition

Calories: 173kcalCarbohydrates: 28gProtein: 9gFat: 6gSaturated Fat: 5gTrans Fat: 0.02gSodium: 104mgFiber: 5gSugar: 8gIron: 1mg***Net Carbs: 23g

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