1. Preheat oven to 350°F.
2. Mix together peanut butter, eggs, brown sugar, applesauce, and vanilla in a medium mixing bowl.
3. Add protein powder, oats, flax meal, and salt. Mix together until a dough forms - should be sticky.
4. Drop spoonfuls dough onto cookie sheets approximately 6-8 per cookie sheet.
5. Bake for 10 minutes.
6. Cool and store in an airtight container in the refrigerator.