VIRAL 3-Ingredient Marshmallow Protein Bars [sugar-free + low-carb]

These 3-Ingredient Marshmallow Protein Bars are a healthier alternative to Built Puff Bars! Soft, fluffy, sugar-free, and packed with protein, they’re an easy no-bake snack with customizable cereal and protein flavor variations.

If you’re looking for a dairy-free version, CLICK HERE.

3-Ingredient Marshmallow Protein Bars

If you’re a fan of Built Puff Bars, you’re going to love this homemade version.

These 3-Ingredient Marshmallow Protein Bars are a healthier alternative to Built Puff Bars, delivering that same soft, fluffy marshmallow texture in an easy, no-bake recipe made with just a handful of simple ingredients. They’re packed with protein, contain no added sugar, and can be customized with your favorite protein powder flavors and cereals for endless delicious variations.

They’re incredibly easy to make and are perfect for meal prep, post-workout fuel, healthy desserts, or an afternoon snack. Whether you enjoy them plain or turn them into marshmallow cereal bars, they’re a fun, satisfying way to boost your protein intake while enjoying a nostalgic treat. They’re a reason why they’ve gone viral on my TikTok!

Why You’ll Love These Marshmallow Protein Bars

These bars are guaranteed to become a staple in your kitchen because they’re:

• Made with just 3 simple ingredients
• Packed with over 12 grams of protein per bar
• No added sugar
• No baking required
• Soft, fluffy, and perfectly chewy
• Great for meal prep
• Easy to customize with different flavors and mix-ins
• Kid- and adult-approved

Ingredients

• 400 ml fat-free Fairlife milk
• 50 grams NuNaturals gelatin (code healthyhelper saves!)
• 50 grams Equip Foods Prime Protein (code healthyhelper saves!)

How to Make Marshmallow Protein Bars

• Line an 8×8-inch baking pan or loaf pan with parchment paper.
• Add the milk and gelatin to a saucepan and allow the gelatin to bloom according to the package directions.
• Heat over low heat, stirring constantly, until the gelatin is completely dissolved. Do not allow the mixture to boil.
• Remove the pan from the heat and pour into a food processor. (You can also use a high-speed blender like a Vitamix!)
• Add in the protein and blend for several minutes until the mixture becomes thick, fluffy, and nearly triples in volume.
• Transfer the mixture to the prepared pan.
• Refrigerate for at least 6 hours (overnight is best!!) or until completely firm.
• Slice into 8 bars and enjoy!

Flavor Variations

One of my favorite things about these Marshmallow Protein Bars is how easy they are to customize.

Apple Cinnamon Peanut Butter Marshmallow Protein Bars

Use Equip Foods Peanut Butter Prime Protein and fold in 3 cups of no-sugar-added apple cinnamon cereal.

This combination tastes like apple pie and peanut butter wrapped up in a fluffy marshmallow cereal bar.

Cookies and Cream Chocolate Marshmallow Protein Bars

Use Equip Foods Cookies and Cream Prime Protein and fold in 3 cups of Magic Spoon chocolate cereal.

The result tastes like a cookies-and-cream cereal treat with an incredible protein boost.

More Flavor Ideas

Have fun experimenting with different cereal and protein powder combinations. Some delicious options include:

• Cinnamon cereal with vanilla protein
• Oreo cookie flavor with black cocoa and powdered sugar
• Peanut butter cereal with chocolate protein
• Fruity cereal with vanilla protein
• Salted caramel with popcorn
• Chocolate cereal with chocolate protein
• Pumpkin spice protein with cinnamon cereal during the fall
• Vanilla with Rice Krispies cereal
• Banana protein with peanut butter swirls
• Red Velvet Cake

There are endless combinations to try!

Tips for the Best Marshmallow Protein Bars

• Whip the mixture until it’s light and fluffy. This creates the signature marshmallow texture.
• Don’t overheat the milk. Gentle heat is all you need to dissolve the gelatin.
• Use parchment paper to make removing and slicing the bars easy.
• Store the bars in an airtight container in the refrigerator for up to one week.

Nutrition

Makes: 8 bars

Per Bar (Marshmallow Base Only)

• Calories: 62
• Protein: 12.6 grams
• Carbohydrates: 1.6 grams
• Fat: 0.3 grams

Nutrition will vary depending on the cereal and protein powder you choose.

Frequently Asked Questions

Can I Use a Different Protein Powder?

Yes! Different protein powders will produce slightly different textures, but Equip Foods Prime Protein creates an especially light, fluffy marshmallow consistency. Vegan protein will not work!!

Can I Use Any Cereal?

Absolutely! Apple cinnamon, chocolate, peanut butter, and fruity cereals all work well. Simply use about 3 cups for the perfect marshmallow-to-cereal ratio.

Do These Marshmallow Protein Bars Need to Stay Refrigerated?

Yes. Since they’re made with gelatin, they should be stored in the refrigerator to maintain their texture and shape.

These 3-Ingredient Marshmallow Protein Bars prove that healthy snacks don’t have to be boring. They’re fluffy, satisfying, packed with protein, and incredibly easy to customize. Whether you make the Apple Cinnamon Peanut Butter version or the Cookies and Cream Chocolate version, you’ll have a healthier homemade treat that’s perfect for meal prep, post-workout snacking, or satisfying your sweet tooth any day of the week.

If you’re looking for a dairy-free version, CLICK HERE.

Talk soon,