Peas 

If you want a sweet and satisfying low-calorie source of protein, think peas. About 3/4 cup of peas contains as much protein as an egg and less than a gram of fat.
 
 
1 head Bibb or Boston lettuce
2 cups shelled green peas
1/4 cup broth
herbs, as desired
 
Wash but do not dry the lettuce leaves. Line a saucepan with one layer of lettuce leaves. Spread the shelled peas on the lettuce lining and season with herbs, salt and pepper to taste. Add broth. Cover peas with another layer of lettuce leaves. Cover the pan, and cook peas over medium heat for 15 minutes, or until tender. Before serving, chop lettuce and toss with the peas.