Start by mixing the protein powder, nut butter, and oats in a large bowl. This ensures that all dry ingredients are evenly distributed before adding wet ones.

Now, pour in your choice of sweetener and add the ground flaxseed. Stir everything together until well combined and you have a cohesive mixture.

If you like a little chocolatey goodness, now's the time to fold in those mini chocolate chips. It adds a lovely pop of sweetness!

Line an 8x8-inch pan with parchment paper for easy removal. Then, press the mixture firmly into the pan to ensure the bars hold together after chilling.

Place the pan in the refrigerator for about an hour. Once set, slice into bars and enjoy!