The BEST Protein Bars are healthy, no-bake, and contain nothing artificial! These are chewy, delicious, easy to customize, and are the perfect healthy snack.

Looking for more healthy snacks? Try my Energy Balls, Applesauce, Carrot Muffins, or learn how to make The Perfect Charcuterie Board.

Homemade protein bars made with oats and peanut butter.

Why I love this recipe:

No Bake – No heating up the house, and only takes 10 minutes to throw the ingredients together and put in the fridge.

Healthy – Nothing artificial here. These bars are filled with normal pantry ingredients and sweetened with honey.

Taste Delicious – I've had one to many unappetizing protein bars in my life, so I'm all about making them from scratch, with ingredients I recognize, and they taste wonderful!

Ingredients in Protein Bars:

  • Rolled Oats – quick oats would also work.
  • Protein Powder – Add your favorite whey or plant based protein powder including Chocolate, vanilla, or plain flavored.
  • Peanut Butter – or substitute any nut butter or sunflower butter.
  • Honey – Naturally sweetened and no added sugar. You could substitute agave.
  • Ground Flax Seed
  • Banana – mashed, for sweetness flavor and binding.
  • Salt
  • Vanilla Extract
  • Mix-Ins – I like to customize my bars with chopped dates, dried fruit (blueberries, cranberries, or raisins), mini chocolate chips, or unsweetened coconut flakes.
Labeled ingredients needed to make Protein Bars.

How to make Protein Bars:

Combine Ingredients: Mix all ingredients in a large mixing bowl. Press firmly into an 8×8 inch pan.

Protein Bar ingredients mixed together in a bowl.

Refrigerate for at least 1 hour before cutting into bars.

A pan with chilled protein bar mixture pressed into it, ready to cut into bars.

Cut into bars and store in the fridge.

Freezing Instructions:

Layer bars in a freezer safe bag or container, with a piece of parchment paper between layers, and freeze for up to 3 months. Thaw in the refrigerator or on the counter before eating.

Recipe Variations:

  • Mix-Ins: Customize these bars with your favorite mix-ins! Some ideas: chopped dates, dried fruit (blueberries, cranberries, or raisins), mini chocolate chips, unsweetened coconut flakes, crispy rice cereal, chopped nuts, or anything you like!
  • Nut Butter: Swap out the peanut butter for almond butter, cashew butter, or sunflower butter.
  • Protein Powder: Use your favorite kind. Chocolate, vanilla, or plain would all work great for this recipe!
  • Vegan Protein Bars Recipe: Use your favorite vegan protein powder.

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Recipe

Homemade protein bars.
Prep 10 minutes
Refrigerate 1 hour
Total 1 hour 10 minutes
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Ingredients
 
 

  • 1 1/2 cups old-fashioned rolled oats (135 g)
  • 3/4 cup peanut butter , or favorite nut butter or sunflower butter (180 g)
  • 1 banana , mashed (120 g)
  • 1/3 cup honey , agave or real maple syrup (110 g)
  • Pinch salt
  • ½ cup ground flax seed (55 g)
  • 1 cup protein powder* (120 g)
  • 2 teaspoons vanilla extract (10 ml)
  • 3/4 cup Mix in options: chopped dates, dried fruit (blueberries, cranberries, or raisins), mini chocolate chips, unsweetened coconut flakes, nuts (about 90 g)

Instructions
 

  • Mix all ingredients until well combined. Mixture should be fairly soft and not dry or crumbly. Add a splash of water or milk, or an extra drizzle of honey, if needed.
  • Press very firmly into an 8×8 inch pan. Refrigerate for at least 1 hour before cutting into bars.
  • Store bars in the fridge for up to 2 weeks.

Notes

Freezing Instructions: Layer bars in a freezer safe bag or container, with a piece of parchment paper between layers, and freeze for up to 3 months. Thaw in the refrigerator or on the counter before eating.
Protein Powder: Use your favorite kind. Chocolate, vanilla, or plain would all work great for this recipe, or try half protein powder and half unflavored collagen peptides.
Chocolate Protein Bars: Use chocolate protein powder
Nut Butter: Swap out the peanut butter for almond butter, cashew butter, or sunflower butter.
Vegan Protein Bars Recipe: Use your favorite vegan protein powder.
Gluten-free Adaptations: Use gluten-free protein powder, I really like Clean Simple Eats Vegan protein powder, and gluten-free old-fashioned rolled oats.

Nutrition

Calories: 184kcalCarbohydrates: 18gProtein: 10gFat: 9gSaturated Fat: 2gPolyunsaturated Fat: 3gMonounsaturated Fat: 4gCholesterol: 11mgSodium: 64mgPotassium: 187mgFiber: 3gSugar: 9gVitamin A: 23IUVitamin C: 1mgCalcium: 46mgIron: 1mg

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About The Author

Lauren Allen

Welcome! I’m Lauren, a mom of four and lover of good food. Here you’ll find easy recipes and weeknight meal ideas made with real ingredients, with step-by-step photos and videos.

3.8 29 votes
Recipe Rating
4.96 from 412 votes (373 ratings without comment)
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Liz
1 month ago

Could I use quick oats? Thanks

Admin
1 month ago
Reply to  Liz

Yes that will work great!

1 month ago

5 stars
I added toasted chopped walnuts, coconut, and chocolate chips. I rolled these into protein balls. Everyone who tried
them, loves them.

Cat
3 months ago

4 stars
These were decent, but I really didn’t like the banana taste. (I like bananas on their own, but I don’t like banana bread, so just a preference thing.) Another comment said they subbed applesauce for the banana, but any other suggestions welcome.

4 months ago

5 stars
Delicious and easy. I used less honey because my banana was very ripe; otherwise, I followed the directions as written. I had intended to use these as a pre-post workout option. However, these are so yummy that I may have to make more to use as a weeknight dessert option!

Morgan
4 months ago

Hi Lauren! I was wondering if I could use PB2 for this recipe, and if so, if you had any recommended ratios/measurements? Super excited to try it out:)

Admin
4 months ago
Reply to  Morgan

You can use PB2—just mix it with water first to make it into peanut butter texture (usually 2 Tbsp powder + 1 Tbsp water = 1 Tbsp PB). Then swap it 1:1 for the regular PB in the recipe. Might need a tiny splash more liquid if it feels dry. Let me know how it goes!
-Stacy

Marg
4 months ago

Could I sub powdered milk for the protein powder (much less expensive)

Admin
4 months ago
Reply to  Marg

Yes, you can make that swap! It might slightly change the flavor, but it should work!

Marg
4 months ago
Reply to  Rachel

Thank you, Rachel.

4 months ago

Thanks Stacy, I really appreciate your response!!

4 months ago

I am really excited to try these; however, I am wondering about the pan size. You mentioned using an 8×8 pan but the video is not an 8×8 pan, maybe an 8×11 or 9×13. Could you clarify if the recipe above should be an 8×8? Did you double the recipe for the video and use a larger pan?
Thanks.

Admin
4 months ago
Reply to  Tina

Hey!! You want to use an 8×8 unless you double the recipe (in which case, you’ll use a 9×13!)
-Stacy

Tracy
6 months ago

1 star
These were just pure crumble, what an awful waste of expensive ingredients. I will blend with dates and make protein balls rather than throw out but wouldn’t make again.

Jerilea
6 months ago

I didn’t have a banana and so I used applesauce instead. My kids really liked them.