Dairy-free Beef Stroganoff

I've posted a recipe before for Beef Stroganoff before. I still really like it, but I can't feed it to my son with a dairy allergy. It was a favorite, so I needed to find a way to make it safe.  What we came up with was really good.

In a crockpot add:

2-3 lbs of Steak, cubed (any inexpensive cut will work)
1 pkg Beef Stock concentrate + 2 c water or 1 can beef broth
2 t Onion Powder
1/2 t Celery Salt or powder
1 T Minced Onion
1/4 - 1/2 t Salt

Cook on high 3-4 hrs or low for 7-8 hrs. When meat is fork tender, drain off liquids into a sauce pan. Bring to a boil. Add 1/4 t pepper and wisk (if soy isn't an issue, add 1 T of Worcestershire). Make a slurry by mixing 1 T or cornstarch to 2 T of water. Slowly wisk into liquid until desired consistency is reached. Return sauce to meat.

Serve over rice or egg noodles. If you miss it, mix in 1 t of sour cream to non-allergen eaters portion. I really didn't miss it at all.