Cosmic Blondie Protein Bars with a high protein base, protein frosting and candy coated chocolate bits are out of this world! Healthy, low sugar and low fat snack bars even use cosmic blondie flavor cashew butter.

If you’re on the hunt for a snack that’s not only out-of-this-world delicious but also fuels your body with the power of protein, you’ve arrived at the perfect place. These bars aren’t just about satisfying your cravings; they’re a testament to smart snacking.

We’ve all heard about cosmic brownies, so these take it to the next level; Think a high protein blondie-flavor base with a vanilla-y butter-y frosting (without butter) and the candy coated chocolate bits on top. Really perfect!

Ingredients for Cosmic Blondie Protein Bars

These cosmic blondie protein bars are made clean ingredients – no sugar or butter – and even have a cosmic blondie flavor cashew butter!

Whey-Casein Vanilla Protein Powder for high protein cosmic blondie bars, and also replace sugar. I used Quest Nutrition.
Whey Vanilla Protein Powder; I recommend Dymatize for this.
Unflavored Protein Powder to replace some of the flour (and carbs) in the recipe. Quest Nutrition whey-casein again here.
Cashew Butter Powder: The same one from PB2.
Peanut Butter Powder from Lakanto (the code HAYLSKITCHEN gives you a discount) or PbFit works too.
Whole Wheat Pastry Flour
1:1 Zero Calorie Brown Sugar Substitute – I use Lakanto, to keep this recipe sugar free; (code HAYLSKITCHEN for a discount here).

Cosmic Blondie flavor Cashew Butter
I recommend American Dream Nut Butter (code HAYLSKITCHEN gives you a discount) Cosmic Blondie CB, or any other Cashew Butter here; Its lower fat and higher protein.
Unsweetened Almond Milk
Unsweetened Applesauce
Nonfat Plain Greek Yogurt
Coconut Flour
Vanilla Extract
Baking Soda

For the Frosting:

Nonfat Plain Greek Yogurt
Whey-Casein Vanilla Protein Powder: I used Quest Nutrition.
Cosmic Blondie flavor Cashew Butter: American Dream Nut Butter (code HAYLSKITCHEN gives you a discount)
Candy Coated Chocolate Chips – These are the “cosmic brownie sprinkles” to go on cosmic blondies! Here’s the ones I used from Amazon.

How to make Blondie Bars with Candy Coated Chips and Protein Powder

This cosmic blondie bars recipe with candy coated chocolate chips is a really easy recipe to make, but here’s some pointers to get it right.

Whisk all wet ingredients well so its a smooth mix.
Greek yogurt, applesauce, milk, cashew butter, brown sugar, vanilla,
Use drippy cashew butter so it mixes well with the wet ingredients and does not clump.

Mix all dry ingredients.
Whey-casein and whey vanilla protein powder, unflavored protein powder, flour, coconut flour, cashew butter powder, baking soda.
Add dry mix to wet and whisk a bit first, then fold with spatula.
Don’t over-mix the batter!
Make sure you gently fold the dry mix into the wet to combine them.
If you over-mix it, the protein powder will make the low calorie cosmic blondie bars tough, dense and gummy.

Taste the batter and see if you need some extra sweetener. I’d recommend using stevia powder to maintain the consistency of the batter and have healthy cosmic blondie bar recipe with no added sugar.
Pour mix into parchment lined pan.
Bake 25-30 minutes at 350°F.
Don’t over-bake the bars or it will get tough; Remove when the tester/knife comes out just dry, but moist.
Let cool completely (10 minutes in pan, then on cooling rack).
Cooling is required or frosting will melt.
Frosting: Mix greek yogurt, protein powder and cashew butter.
Spread on base.
Sprinkle candy coated chocolate bits on top.
Slice into 16 pieces.

How to store Protein Cosmic Blondie Squares?

These high protein cosmic blondie squares are a great meal prep; cosmic blondie snack bars must be kept in the fridge in an airtight container for 3-4 days.

To freeze healthy cosmic blondie protein squares, place in freezer-safe zipper bags or use air tight container; They should keep for 2-3 months. Thaw before eating.

Alternatives for Healthy Cosmic Blondie Bars Recipe

I made these healthy cosmic blondie bars with the specific products (and brands) mentioned, but 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. I’d love to know if you do!

Whole Wheat Pastry Flour: All purpose flour, 1:1 gluten free baking flour; The same amount by weight
Unflavored Protein Powder: 2½ Tbsp flour, But also reduce yogurt to ⅔ cup.
Flavored Cashew Butter: Regular Cashew Butter, Almond Butter, Peanut Butter, Sunflower Seed Butter, Hazelnut Butter or even Tahini.
1:1 Zero Calorie Brownie Sugar Replacement: Regular brown sugar
Cashew Butter Powder: Almond Butter Powder or Peanut Butter Powder
Almond Milk: Any other milk

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