Instructions

  1. Stir first 4 ingredients together in bowl.
  2. Place steak pieces in 3 1/2 quart (3/5 L) slow cooker. Pour 1/3 of sauce over and between pieces.
  3. Sprinkle onion and mushrooms over top.
  4. Pour remaining 2/3 of sauce over all.
  5. Cover and cook on Low for 7-9 hours or on High for 3 1/2 to 4 1/2 hours.