What a great easy work night meal! It tasted so yummy and only took minutes to make! Thanks for the great idea!
Really outstanding. Lots of rich flavor without all of that fat filled gravy. The onion and tomato add a clean freshness and using low fat cheese allows for 2 or 3 extra slices of lean roast beef. I have loved the grainy mustard for a long time and it's a natural in this sandwich. :D