Crock Pot Melt in Your Mouth Cube Steak and Gravy

1 lb. cube steak (about 4 pieces) or round steak
3 (3/4 ounce) envelopes beef gravy or mushroom gravy (beef, mushroom beef, herbed beef, mushroom...mix and match to your liking)
3 cups water
1 onion, sliced (optional)
sliced mushrooms (optional)

1. Place the meat in the bottom of your crockpot.
2. On stovetop, bring water and gravy packet mix to a boil; whisk until smooth and pour over meat in crockpot.
3. If you are adding onions and/or mushrooms, add them also.
4. Cook, on low for 8 hours.

Real comfort food done plain and simple. This usual tough cut of meat will melt in your mouth after slow cooking all day.
Serve with mashed potatoes, veggie and rolls.