In a mixing bowl, combine protein powder with almond flour, cocoa powder and a pinch of salt.
Add to the bowl almond butter and maple syrup.
Mix with a spatula or fork until a smooth dough forms. If necessary, use your hands to knead.
If the dough is too dry, add a splash of milk or a little more almond butter. If it’s too wet, mix in extra almond flour or a bit more protein powder instead. Casein and vegan protein powder absorb more moisture than whey.
Fold through chocolate chunks or any mix-ins you'd like, if desired.
Scoop out portions of dough and roll them into bite-sized balls with your hands. To prevent sticking, lightly dampen your palms or dust them with almond flour.
Line the protein brownie bites on a tray or in a container and refrigerate for 30–60 minutes to help them firm up.
Store leftovers in an airtight container in the fridge for up to 5 days.