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You are here: Home / Allrecipes / Protein Bars

Protein Bars

Last Modified: September 22, 2025

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Easy homemade protein bars made with oats, peanut butter, protein powder, and natural sweeteners. These no-bake bars are healthy, filling, and perfect for meal prep, post-workout snacks, or a quick breakfast on the go.

Table of Contents

Toggle
    • Ingredients
    • Instructions
  • Tips
  • Variations and Substitutions
  • FAQs
  • Serving Suggestions
  • Why You’ll Love This Recipe
  • Protein Bars
    • Ingredients
    • Directions

Ingredients

  • 1 ½ cups (135 g) old-fashioned rolled oats
  • ¾ cup (180 g) peanut butter (or your favorite nut or seed butter, such as almond or sunflower)
  • 1 medium banana, mashed (120 g)
  • ⅓ cup (110 g) honey, agave, or pure maple syrup
  • Pinch of salt
  • ½ cup (55 g) ground flaxseed
  • 1 cup (120 g) protein powder*
  • 2 teaspoons (10 ml) vanilla extract
  • ¾ cup (90 g) mix-ins such as chopped dates, dried fruit (blueberries, cranberries, or raisins), mini chocolate chips, unsweetened coconut flakes, or chopped nuts

Instructions

  1. Mix Ingredients: In a large bowl, combine oats, peanut butter, banana, honey, salt, ground flaxseed, protein powder, vanilla extract, and your chosen mix-ins. Stir until everything is well incorporated. The mixture should be soft and cohesive, not dry or crumbly. If needed, add a splash of water, milk, or an extra drizzle of honey to bring it together.
  2. Shape the Bars: Press the mixture very firmly and evenly into an 8×8-inch pan lined with parchment paper.
  3. Chill: Refrigerate for at least 1 hour to allow the bars to firm up.
  4. Cut and Store: Slice into bars and store in the refrigerator for up to 2 weeks.

Tips

  • Press the mixture down as firmly as possible to help the bars hold their shape.
  • Line the pan with parchment paper for easy removal.
  • If the mixture is too sticky, lightly grease your hands or spatula with oil before pressing it into the pan.
  • Let the bars chill thoroughly before slicing to prevent crumbling.

Variations and Substitutions

  • Nut-free option: Use sunflower seed butter and nut-free mix-ins for an allergy-friendly version.
  • Protein powder choice: Whey, casein, or plant-based protein powders all work—just adjust liquid if the mixture feels too dry.
  • Flavor twist: Add a dash of cinnamon, cocoa powder, or instant espresso for extra flavor.
  • Sweetener swap: Replace honey with maple syrup or agave to make them vegan-friendly.

FAQs

Can I freeze protein bars?
Yes. Wrap bars individually and freeze for up to 3 months. Thaw in the fridge before eating.

Do I need to bake these bars?
No, this is a no-bake recipe. Chilling sets them perfectly.

Why are my bars crumbly?
The mixture may need more moisture—add an extra spoonful of peanut butter, honey, or a splash of milk.


Serving Suggestions

  • Enjoy as a quick grab-and-go breakfast.
  • Pack in lunchboxes for a healthy snack.
  • Take on hikes or road trips as an energy-boosting option.
  • Pair with a smoothie or fruit for a post-workout recovery meal.

Why You’ll Love This Recipe

  • Simple, no-bake recipe ready in minutes.
  • Packed with protein, fiber, and healthy fats for lasting energy.
  • Customizable with endless flavor and mix-in combinations.
  • Perfect for meal prep and busy lifestyles.
Protein Bars
Print

Protein Bars

Servings

16

servings
Prep time

10

minutes
Cooking time

1

hour 

Ingredients

  • 1 ½ cups (135 g) old-fashioned rolled oats

  • ¾ cup (180 g) peanut butter (or your favorite nut or seed butter, such as almond or sunflower)

  • 1 medium banana, mashed (120 g)

  • ⅓ cup (110 g) honey, agave, or pure maple syrup

  • Pinch of salt

  • ½ cup (55 g) ground flaxseed

  • 1 cup (120 g) protein powder*

  • 2 teaspoons (10 ml) vanilla extract

  • ¾ cup (90 g) mix-ins such as chopped dates, dried fruit (blueberries, cranberries, or raisins), mini chocolate chips, unsweetened coconut flakes, or chopped nuts

Directions

  • Mix Ingredients: In a large bowl, combine oats, peanut butter, banana, honey, salt, ground flaxseed, protein powder, vanilla extract, and your chosen mix-ins. Stir until everything is well incorporated. The mixture should be soft and cohesive, not dry or crumbly. If needed, add a splash of water, milk, or an extra drizzle of honey to bring it together.
  • Shape the Bars: Press the mixture very firmly and evenly into an 8×8-inch pan lined with parchment paper.
  • Chill: Refrigerate for at least 1 hour to allow the bars to firm up.
  • Cut and Store: Slice into bars and store in the refrigerator for up to 2 weeks.

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