If u don't have butter milk, u can mix 1/2cup milk with 1 tsp vinegar.
Instructions
Prepare chicken, dip in buttermilk, and rolled on the french onion, cover evenly
Preheat oven 400F, arrange the chicken on the baking sheet and bake it 30 minutes and turn other side bake 15-20 minutes till golden brown.
Mean while in a pot boiled green bean , pinch of salt. If already soften a bit and still crunchy. remove from heat ,make sure stop cooking process by soaking green bean in a cool ice water.
In a stir fry pan, sesame oil,soy sauce, bean paste sugar, stir well add boiled green bean, toss a minutes, sprinkle sesame seed
In serving dish arrange chicken and green bean.Serve with white rice.