01 -
Place the diced onion on the bottom of the slow cooker. Add the chicken breast over the onion.
02 -
Season the chicken with half of the Italian dressing mix.
03 -
Cut the potatoes into bite-sized chunks and place them on one side of the slow cooker over the chicken. Place the green beans over the other side of the chicken.
04 -
Sprinkle the rest of the Italian seasoning over the top of the potatoes and green beans, then drizzle the melted butter over everything.
05 -
Place the top on the slow cooker and cook on high for 3.5-4 hours, or low for 4.5-5 hours.