Mix ground turkey, onion, pepper and egg whites in a bowl.

Make into four patties.

Cook patties on medium heat for about 7 minutes on each side, I prefer grilling them.

I like melting either swiss or fresh mozzarella cheese over them.

Spread avocado on top bun and then add the diced tomatoes. I like using a multi-grain. Place favorite condiment on bottom bun, mayo works great.