Collagen Protein Blondies - Just The Best!

Extra fudgy Collagen Protein Blondies with all the rich, dense flavor but sugar free and low fat! Healthy, high protein collagen peptides blondies use collagen powder and egg whites, and have no protein powder at all.

Okay this might be a bold statement, but this blondie is actually by far the best one I've ever made! I know I've got quite a few blondie recipes on my site here, but the fudgy and dense factor in these collagen powder blondies really is unmatched!

How are these protein collagen blondies so good? I used collagen peptides in baking these blondies and that's what gave them the dense fudgy texture. My usual whey-casein protein powder makes things more light and airy like fluffy cakes, but the key to these blondies is to use collagen!

A little backstory - The real inspiration here came from my 10/10 collagen brownies recipe because that was the richest most fudgiest brownie I've made (same concept as this one). After the major success there, I knew I had to create a blondie or blonde brownie variataion!

Overall though, this is a really healthy blondie recipe here since there's no butter and sugar like the regular recipes out there.

Ingredients for Collagen Protein Blondies

These extra fudgy collagen protein blondies are made without protein powder and only a few healthy ingredients; No eggs, no oil, no sugar and gluten free too.

• Unflavored Collagen Peptides needed for high protein brownies. I use the one from Further Foods (HAYLSKITCHEN gives you a discount)
• Zero Calorie Brown Sugar - This is the Brown Monkfruuit 1:1 Sugar Substitute from Lakanto, and keeps this recipe sugar free;  (code HAYLSKITCHEN for a discount here)
• Peanut Butter Powder, also known as Powdered Peanut Butter. I use Lakanto for a sugar free version (the code HAYLSKITCHEN gives you a discount here too)
• Coconut Flour
• Whole Wheat Pastry Flour - or a regular all purpose flour
• Runny Tahini

• Non-fat Greek Yogurt contributes to the oil-free part of these high protein brownies since it adds the moisture, and also extra protein 
• Egg Whites for extra high protein without the added fat from the yolk
• Almond Milk or regular milk
• Vanilla Extract
• Baking Soda

• Sugar free White Chocolate Chips or Chopped Chocolate - I use sugar free ones from Lily's here.
  Feel free to use milk or dark chocolate!

Flavor Options for these blondies?

These Collagen Peptide Blondies are the perfect base for endless flavor combinations that keep them sugar-free and high protein. Get creative with these additions:

• Nutty Collagen Blondies: Stir in ¼ cup of chopped walnuts, pecans or almonds (raw or toasted) for added texture, healthy fats, and a classic blondie crunch.
  Granola might be a lovely mix-in too!
• Peanut Butter Swirl Collagen Blondies: Once the batter is in the pan, swirl in a tablespoon of smooth, low-sugar peanut butter or almond butter.
• Berries & Cream Blondies: Inspired by a reader favorite, fold in ½ cup of fresh or frozen (not thawed) raspberries or blackberries before baking.
  Some fresh spring vibes without the added sugar!
• Spiced Fall Blondies: Add 1 teaspoon of cinnamon and ¼ teaspoon of nutmeg to the dry ingredients for a cozy, spiced flavor.

Easy Step-by-Step: How to Make These Collagen Blondies

Making these ultra-fudgy, sugar-free treats is surprisingly quick and simple!

• Prep: Preheat your oven and line your baking pan with parchment paper for easy removal.
• Mix Dry: In a large bowl, whisk together the dry ingredients: flours, collagen peptides, baking soda, and the zero-calorie sweetener.
• Mix Wet: In a separate bowl, combine the wet ingredients: Greek yogurt, egg whites, milk, tahini (or nut butter), and vanilla.
• Combine: Pour the wet mixture into the dry ingredients and mix gently until just combined. Don't overmix!
• Fold: Gently fold in your sugar-free white chocolate chips or any desired mix-ins.
• Bake: Spread the batter into your prepared pan evenly and bake until a toothpick inserted in the center comes out with just a few moist crumbs-that's the secret to perfectly fudgy blondies!

Tips to make Collagen Powder Blondies with no Protein Powder?

This recipe for chocolate chip collagen blondies is extremely easy to make. Here's some pointers to get it right though.

• Mix all the dry ingredients and wet ingredients separately, then combine. You want the mixture to be smooth.

• For extra fudgy collagen blondies, let some moisture be there on the tester - this should be at about 25 minutes.
  
• Use a plastic knife to cut the blondies; these collagen protein blondies are quite fudgy and will stick to a metal knife when cutting.

How to store Collagen Peptides Blondie Bars?

This high protein collagen peptides blondies recipe keeps well for a meal prep dessert or post workout snack and is freezer friendly too!

Store the collagen powder dessert at room temperature in an airtight container for 1-2 days or in the fridge for a week.

To freeze collagen blondies, individually wrap in plastic wrap and place in freezer-safe zipper bags or air tight container; They should keep for 2-3 months.

Alternatives for Healthy Protein Blondies without Protein Powder 

For the perfect fudgy and moist protein collagen powder blondies bars, I would highly suggest using the ingredients and brands I recommended; I do have some alternatives you can try. I haven't testing them all, so I can't say how your recipe might turn out.

• Whole Wheat Pastry Flour: All purpose flour or 1:1 Gluten Free Baking Flour, in the same amount by weight.
• Zero Calorie Brown Sugar Alternative: Regular coconut sugar or brown sugar (this won't be sugar free though, and also higher in calories)
• Peanut Butter Powder: Regular peanut butter, but reduce milk to 2 Tbsp.
• Tahini: Peanut Butter, Almond Butter, Cashew Butter, or any nut or seed butter.
• Greek Yogurt: Coconut Yogurt
• Almond Milk: Any other milk 

More Collagen Powder Baking Recipes

• Collagen Protein Brownies
• Peanut Butter Chocolate Collagen Bars
• Mocha Collagen Brownies
• Collagen Banana Bread
• PB Collagen Cookie Bars
• Quick 10 Minute Air Fryer Baked Oatmeal with Protein
• Diet-friendly Soft Pumpkin Cookies with Protein Icing