PF Changs meet Cheesecake Factory - These are the two places that I think have the best lettuce wraps, and this recipe is a combination of both:
2-3 chicken breasts cut in small cubes (you can also use ground turkey for texture similar to PF Changs)
1 can water chestnuts, chopped finely
1 bunch green onions, chopped
1/2 can bean sprouts (found in the Asian food isle of your grocery store)
Brown sugar, soy sauce, white rice vinegar, siracha (or Tabasco) - I can't give exact measurements, add according to taste.
Cook chicken until almost done. Add bean sprouts, green onions, water chestnuts, and sauce. Let all cook thoroughly and simmer in sauce for about 15 minutes (you'll want enough sauce to coat all the ingredients fairly well).
Serve with butter lettuce, shredded carrots, shredded/chopped cucumber, chopped green onions, and the remaining 1/2 can of bean sprouts. I like to set it up like a taco bar and let everyone make their own. Make a separate bowl of sauce in which to dip wraps. Enjoy!