To make the Teriyaki Sauce. combine soy sauce, 3 tablespoons of water, balsamic vinegar, maple syrup, garlic, and cornstarch in a small saucepan. Bring the mixture to a boil, stirring constantly until it thickens. Remove the saucepan from heat and set aside.
Place a large skillet over medium heat and add the olive oil. Once the oil is hot, add the onions, carrot, and red pepper. Sauté until the onions are translucent and vegetables are cooked all the way through.
Add in the chickpeas and let them warm for around 1 minute. Remove from heat and stir in the Teriyaki Sauce, evenly coating the mixture.
Gently remove 8 Green Butter lettuce leaves from the lettuce head and pat off any excess liquid. To assemble, place about 3 tablespoons of filling in each lettuce wrap. Serve immediately.
Notes
Recipe can be easily doubled or tripled to serve larger groups of people.