5-Ingredient Protein Bars (no-bake!)
- By Amy Dong
- Updated Apr. 26, 2025
For deliciously nutritious energy on the run, grab your own homemade Protein Bars! These couldn’t be easier to make and are much more affordable than store-bought bars.
In This Article
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No-Bake Protein Bars Recipe
Say goodbye to complicated, ingredient-filled packaged energy bars. These super easy homemade protein bars are made of only 5 natural ingredients. You’ll be rewarded with a nice batch of fresh protein bars that cost way less than store bought bars.
Why This Recipe Works
- Five Great Ingredients: You’ll only need 5 simple pantry ingredients, all of which are simple and pure ingredients. Nothing artificial or unfamiliar.
- Tastes Better: These homemade protein bars taste so much better than store-bought versions.
- Way Cheaper: You’ll immediately notice how much money you save by making your own protein bars.
- Keeps Well: You can make a big batch and keep them chilled or even frozen until you’re ready to eat.
Five Great Ingredients
You’ll love the pure, nutritious, simple ingredients that go into these bars”
- Whole Rolled Oats: whole oats provide a more robust texture than quick or instant oats.
- Real Peanut Butter: we love chunky peanut butter, as it lends a bit of crunch to the bars.
- Whey Protein Powder: We highly recommend steering clear of artificial sugars, as those tend to have an unpalatable aftertaste. Our personal favorite is pure, unflavored 100% whey protein powder, which we’ve been using for years.
- Real Maple Syrup or Honey: it just feels better than sugar. Plus, maple or honey has the sticky texture needed to help bind the bars.
- Milk: We like regular whole milk for this recipe, but feel free to use your milk of choice.
- Optional Add-ins: We love dried blueberries, chocolate chips, or drizzled chocolate.
- Pro Tip: If you’re planning to stash these bars in your gym bag, backpack, or lunch sack, we recommend skipping the drizzle on top. They’ll stay a lot neater that way and you’ll like us more.
Substitutions and Variations
- Nut or Seed Butters: Feel free to substitute peanut butter with almond butter, cashew butter, or sunflower butter for a nut-free version.
- Whey Protein Powder Flavors: We recommend pure, unflavored 100% whey protein powder, but if you want extra flavor, feel free to use vanilla or chocolate versions.
- Sweetener: You’re free to interchange pure maple syrup with real honey, or even agave nectar, if you like.
- Type of Milk: Feel free to use your milk of choice – cow’s milk, almond milk, oat milk, soy milk, etc.
- Add Ins: Try white chocolate chips, dark chocolate, dried cherries, dried cranberries, carob chips, shredded toasted coconut, or roasted chopped nuts.
Easy Step-By-Step Instructions
- Combine milk, peanut butter, and maple syrup/honey over low heat. Stir just until all ingredients are well combined and warmed through.
- Add protein powder, oats, and optional cinnamon or add-ins. Stir to combine well. Taste and add more maple syrup or honey if desired.
- Press evenly into pan, using firm pressure to compress mixture into desired bar thickness.
- Allow bars to cool completely and cut into squares. Cover and chill until ready to eat.
Tips for Making Ahead
- I make a big batch, which comes in handy for pick-me-up snacks when anyone in the family gets the munchies. These bars are great for breakfast on the go.
- Make them ahead of time and keep at moderate room temperature for 3-4 days, stored airtight.
- These bars keep even longer if kept in an airtight container or in individual baggies in the fridge, up to 1 week.
- Feel free to freeze some protein bars so you can have them on hand all month long. Simply defrost in fridge or on the counter.
Did you make this?
Please give us a rating and comment below. We love hearing from you!
5-Ingredient Protein Bars (no-bake!)
Ingredients
- ½ cup milk
- 1 cup peanut butter, chunky
- ½ cup maple syrup, or honey, plus extra to taste
- 1 cup whey protein powder, plain, unflavored recommended*
- 2 cups whole rolled oats, uncooked
- 1 teaspoon cinnamon, optional
- Optional Add-ins, 1 cup: chocolate chips, raisins, dried blueberries, chopped dates, or melted chocolate for topping
Instructions
- In a medium heavy pot, combine milk, peanut butter, and maple syrup/honey over low heat. Stir just until all ingredients are well combined and warmed through. Remove from heat.
- Add protein powder, oats, and optional cinnamon or add-ins. Stir to combine well. Taste and add more maple syrup or honey if desired. If mixture is too thick to stir, add 1 tsp milk at a time just until it's stir-able; mixture should still be thick and not at all watery.
- Lightly grease an 8×8 pan. Press evenly into pan, using firm pressure to compress mixture into desired bar thickness. Tip: use wet or lightly greased hands to prevent sticking.
- Allow bars to cool completely. Once cool, cut into squares. If desired, drizzle with melted chocolate and let cool completely. Wrap in airtight container and store at moderate room temp for several days, or chilled in fridge for a week.
Notes
- Protein powder is to be measured according to standard measuring cups, not the scoops that come inside the tub of protein powder. If needed, check for certified gluten-free labeling.
- You can use vanilla or chocolate protein powder, but we recommend using unflavored, pure 100% whey protein powder, made without fake/artificial sugars and no funny aftertaste.
- Make it dairy-free: use whole almond milk, coconut milk, soy milk, or oat milk.
- Lactose-free cow’s milk can be used, for those with lactose intolerance.
- Make it nut-free: use sunflower butter instead of a nut butter.
- For additional variations/substitution ideas, see original article.
- If you’re planning to pack these bars to go, use add-ins rather than drizzling anything on top, to keep your bars easy to transport.
- If you enjoyed this recipe, please come back and give it a rating ❤️
Nutrition (per serving)
Commonly Asked Questions
We highly recommend steering clear of artificial sugars, as those tend to have an unpalatable aftertaste. Our personal favorite is pure, unflavored 100% whey protein powder, which we’ve been using for years.
You can certainly use your favorite flavor or protein powder, though we recommend using unflavored, pure whey protein and your choice of add-ins for best results.
These protein bars keep well when stored airtight, up to 1 week at moderate room temperature. They can keep longer chilled in fridge, and up to 3 months in the freezer.
We love the creamy richness whole milk provides, but feel free to use your choice of milk: almond milk, oat milk, soy milk, and coconut milk can all be substituted.
We love semi-sweet chocolate chips or dried blueberries. You can also try white chocolate chips, dark chocolate chips, peanut butter chips, dried cherries, dried cranberries, toasted shredded coconut, or roasted chopped nuts.
Yes, you can! Once they’re completely cool, cut them into bars, wrap them individually, and freeze for up to one month.
This recipe is chock full of only good ingredients and nothing artificial. These bars are loaded with whole oats, peanut butter, milk, honey, and pure unflavored whey protein. You’ll get plenty of protein and fiber, especially if you also add in dried fruits or nuts!
More to Eat
- Protein Granola Energy Bars – These chewy energy bars are packed with the goodness of whole oats, and are ideal for breakfast.
- Nut-Free, Gluten-Free Cereal Protein Bars – No time for cereal in a bowl? Try these cereal protein bars.
- 3-Ingredient Larabars – If you’re feeling done with paying a premium for Lara-type bars, here’s how to make them at home for a fraction of the price.
- THE BEST Chocolate Oatmeal Bars (No-Bake!) – Have your chocolate and oatmeal, too. These bars are a win-win for healthy energy.