4-6 large, soft lettuce leaves, such as green leaf or butterhead
½ avocado
2 thick slices tomato
2 slices sweet onion, such as Vidalia
2 tsp. canola oil
¼ tsp. salt
½ tsp. ground pepper
½ tsp. garlic powder
2 tsp. Worcestershire sauce
¼ cup shredded sharp Cheddar cheese
8 oz. lean ground turkey
⅛ tsp. salt
2 tsp. canola oil
1 medium sweet potato (12 oz.), peeled