Roast Beef Sandwiches Au Jus

This is the first of the freezer meals that I made. It was really tasty and VERY easy!!!!! Well worth the few minutes it takes to make it.

1.5 pound London broil
1 oz package of au jus gravy mix
1 oz package of brown gravy mix
3 cups water
4-6 sandwich rolls

Trim fat off meat. Sprinkle gravy mixes on London broil in 1-gallon Ziploc bag. Label and freeze. Thaw, add 3 cups water to back and shake. Pour into Crock-Pot and cook (low) for 3-4 hours. Slice mean and return to sauce. Serve on toasted buns.