Directions: Place your instant pot on saute. Melt butter and add chopped onion and mushroom cook for about 2-3 minutes until onions are soft. Add chicken broth, heavy cream and green beans. Place on manual high pressure for 15 minutes. Do a quick release Add in 1-2 tbs of cornstarch to thicken. Top with French's Onions and serve. Warning this will go fast.For Slowcooker: Directions are the same but cook on low for 4 hours.