1 tsp. dry mustard
1 tbsp. flour
1 tbsp. vinegar
Salt & pepper

Mix above ingredients well and place in a large Pyrex casserole.

1 1/2 - 2 lbs. stew beef
2 onions, sliced
2 beef bouillon cubes dissolved in 2 c. hot water

Cut the stew beef into bite size chunks and rub into casserole dish. Place the sliced onion and top of meat and cover with the bouillon. Cover dish with foil and let stand for 1 hour. Bake at 350 degrees for 2 1/2 hours and then thicken before serving.