Line up a 20 x 20 cm (8 x 8 inch) baking tin with parchment paper.
Add the rolled oats, protein powder, linseed and chia seeds to a large bowl.
150 g rolled oats
150 g whey protein powder
3 tbsp linseed
2 tbsp chia seeds
In a separate, microwave-safe bowl, add the peanut butter, maple syrup, and coconut oil. Microwave for 20-25 seconds and mix until everything is smooth and combined.
175 g smooth peanut butter
50 g coconut oil
90 g maple syrup
Add the mixture to the dry ingredients and mix until you get a very thick dough. The dough should be slightly crumbly, but if you feel it's too dry to work with, add another 10-15 grams of liquified coconut oil.
Press the mixture into the lined tin, making sure you get it into the corners. Refrigerate for 1 hour.
Cut the protein bars into 10 pieces (or 20 small squares if you prefer) and store in an airtight container for up to two weeks.