1-First, whisk the sauce ingredients together until smooth. If the peanut butter is too thick, warm it a bit to mix easily; this step creates that flavorful base you’ll love.

2-Next, heat 2 tablespoons of peanut oil in a frying pan over medium heat. Add the ground chicken, onion, and minced garlic, cooking until the chicken browns and the onions turn translucent, which takes about 5 to 10 minutes.

3-Then, stir in the diced bell pepper and water chestnuts, letting them cook for another 5 minutes until the peppers soften. Pour in the sauce and simmer on low heat until everything thickens and heats through evenly.

4-Finally, spoon the mixture into washed and dried lettuce leaves, and garnish with crushed peanuts and green onions. You can also serve it over noodles or rice for a different twist. Remember, for the best results, adapt based on dietary needs during cooking.