London Broil with Mushroom Gravy

This recipe came from a neighbor back on Bonnie Drive, Hannah Curtis.

2  Tbs  ketchup
1  Tbs  soy sauce
1/2  tsp  thyme
1/4  tsp  pepper
2  lbs  flank steak

Combine and brush on the flank steak. Marinate 30-40 minutes. Broil 3-4 minutes per side (rare), 4" from heat. Or grill over charcoal (I always do this). Serve with Mushroom Gravy.

Mushroom Gravy:
1/2  lb  sliced mushrooms
4  Tbs  melted butter or margarine
2  Tbs  flour
2  Tbs  white wine
1  can  beef broth
1  Tbs  parsley
1/4  tsp  pepper
Dash of thyme

Saute sliced mushrooms in melted butter. Add flour, wine, beef broth, parsley, pepper, and thyme. Simmer until thickened. Serve over thinly slice flank steak. Pass the remaining gravy.