2 lbs. beef round, tip or chuck steak (about 3/4-inch thick)
2 Tbsp. flour
1/2 tsp. pepper
1-1/2 tsp. salt, divided
1 Tbsp. vegetable oil
1 medium onion, sliced
1 tsp. dry mustard
1 tsp. Worcestershire sauce
1/8 tsp. red pepper sauce, optional
1/2 cup water
1 can (4 oz.) mushroom pieces and steams, undrained
Mix flour, 1/2 tsp. salt and pepper.
Sprinkle one side of beef steak with half the flour mixture; pound in.
Turn beef and pound in remaining flour mixture. Cut beef into 6 serving pieces, or into 1-inch cubes.
Heat oil in a large skillet until hot.
Cook beef in oil over medium heat, turning once, until brown, about 10 minutes.
Mix remaining ingredients together, except water and mushrooms; stir into beef.
Combine water and mushrooms, and add to beef.
Heat to boiling.
Reduce heat, cover and simmer until beef is tender, about 1 hour.