My son is a 16 yr old competitive swimmer whose training schedule is rigorous. I bring him yogurts, puddings, and peanut butter bars after workouts as per his coach's advice. Coach says protein following workouts helps to rebuild muscle. I would like to bake protein bars for my son, but need some ideas. He's not a huge fan of nuts. Any suggestions for high protein snacks (he won't drink milk either, not even chocolate milk) would be greatly appreciated. Thanks!