For peanut sauce, melt butter in a pan, add onion and garlic and saute for 2-3 minutes.
Stir in peanut butter, lemon juice and soy sauce until blended and heated.
Remove pan from heat and cool.
At serving, fold in cream until smooth and pour into a shallow dish.
Thread diced chicken pieces onto bamboo saute sticks and cook over hot coals for 3-4 minutes, until tender, turning frequently.
Dip in peanut sauce.