Three-Packet Pot Roast 3 lbs. beef roast 1 package of ranch dressing mix 1 package of brown gravy mix 1 package of Italian dressing mix 1 cup of warm water Veggies of choice Place pot roast in the bottom of large crock pot. Mix three packages in a bowl. Cover roast with mixture. Add water and chopped veggies. Cook on low for 6-8 hours.