P.F. Chang's Lettuce Wraps with Chicken

I've been dying to make these "knock-off" PF Changs wraps forever! I absolutely love their lettuce wraps and looked through several versions of recipes before finding this one. I've never cooked with ground chicken before, but it really tasted like the real deal! (FYI - I didn't have green onions and used brown rice in the recipe pictured.) 

Ingredients:
16 Boston, bibb or butter lettuce leaves
1 pound ground chicken breast
1 large onion -- chopped
2 tablespoons minced garlic
1 tablespoon reduced-sodium soy sauce
1/4 cup hoisin sauce
2 teaspoons minced fresh ginger
1 tablespoon rice wine vinegar or red wine vinegar
2 teaspoons Asian chili pepper sauce (see Note)
1 can (8 ounce size) sliced water chestnuts -- drained, finely chopped
1 bunch green onions -- thinly sliced
2 teaspoons Asian sesame oil

Directions:
Rinse lettuce leaves, keeping them whole. Set aside to drain. 

Cook chicken in a large skillet over medium heat, stirring often to break up the meat. Add onion, garlic, soy sauce, hoisin sauce, ginger, vinegar and chili sauce. Cook until the meat is crumbled and brown. Add water chestnuts and green onions. Cook until onions begin to wilt, about 2 minutes. 

Stir in sesame oil. Arrange lettuce leaves on the outer edge of a platter. Spoon meat mixture in center. Allow diners to spoon meat mixture into lettuce leaves and eat like a taco. 

Note: Asian chili pepper sauce can be found in the Asian section of most supermarkets. Some brands contain garlic, which is fine. You can use 1/8 teaspoon cayenne pepper or 1/2 teaspoon dried red chili flakes instead. 

Serves 4 (as a main dish - would serve more as an appetizer...)