Place the chicken breasts in the bottom of a greased crockpot. Sprinkle with French Onion Seasoning, as well as any seasoning you wish to add.
Spread cream of chicken soup and sour cream over the chicken.
Top with stuffing.
Drizzle on melted butter and top with frozen green beans.
Cover and cook on low for 6–8 hours, or until the chicken is tender and cooked through.
Mix it slightly with the stuffing and beans for a hearty one-pot meal.