40-calorie Peanut Butter Collagen Cookies

40kcal | 5g protein | 16 cookies

Ingredients

• 60g collagen powder
• 38g flour
• 30g whey powder
• 38g erythritol
• 18g brown sugar erythritol
• 1/2t baking powder
• 1/2t salt
• —
• 1/4 cup eggwhites, ~60g
• 1/4 cup peanut butter, 63g
• 1/8 cup water, 30g
• 1.5t vanilla extract

Instructions

1. Mix dry.
2. Add wet and mix.
3. Bake at 180°C for 20-25 minutes.
4. Let cool and slice into 16 pieces.

Review

• Honestly really yummy and looks legit! The browning and crust was A+.
• There was a lot of batter.
• Slightly chewy, feels decadent.
• After letting it set in the fridge overnight, it was even more fudgy and chewy! Not the dense gummy kind, but the decadent kind.
• A bit too sweet so I’ll probably halve the sweetener next time; will also see whether it can do without the ‘brown sugar’ sweetener since that’s generally more expensive and less accessible.
• Curious to try it with different flours next time — I’d probably try oat flour, coconut flour (as she recommended), or whey for even higher protein.

✅ Would make again. Super good if you have collagen to use up too (I did).