Easy roast beef (tri-tip)

Ingredients:
Beef Tri-tip
Montreal steak seasoning
button mushrooms
water

Heat oven to 400 degrees

Directions:
Place tri-tip in a glass baking dish.
Sprinkle it with seasoning.(careful not to over do it,or it will be too spicy)
Add the mushrooms and fill the baking dish 3/4 with water.
Cover with foil and place it in the oven for 3 hours.Add more hot water if needed.
Using a spoon,pour the liqued from the bottom of the dish over the meat every hour or so.
When the meat is done,slice it and pour with the liquid from the dish.