in a small jar or salad dressing shaker, add the peanut butter, soy sauce, rice vinegar, water, sesame oil and lime juice. Shake it up until smooth.
heat oil in a large pan and add the onions, garlic and Thai red curry paste. add the ground turkey and cook, stir in the shredded carrots.
pour the peanut sauce evenly over the cooked filling, and toss until everything is evenly coated. set aside to cool slightly.
spoon the filling into romaine lettuce leaves, and enjoy!