Crockpot London Broil

1 London broil
1 large can of diced tomatoes
1 package of onion soup mix
1/2 c red wine

place 1/2 the can of tomatoes and 1/2 the package of soup mix in the bottom of the crockpot. Put the London broil on top (cut into pieces if you need to make it fit.)
Put the remaining tomatoes and soup mix on top and turn on the crock pot on high for 4 hours, add the wine and put on low for another 6. Remove the meat from the sauce, add 2T cornstarch mixed in a little water, turn up to high and let cook for about 5 minutes. Add the meat back in to rewarm and serve with mashed potatoes or noodles.