Hi Cathy! Here is what the label said about heating the slices:
Preparation Instructions:
If product is frozen, thaw overnight under refrigeration.
REHEATING IS OPTIONAL
Sliced beef is fully cooked and ready to eat out of the package. If reheating, be careful not to overcook.
STOVETOP
1. Open pouch and remove beef and natural juices.
2. Separate beef into individual slices. Discard plastic pouch and tray.
3. Preheat non-stick pan on medium-low heat.
4. Add beef slices and juices.
5. Turn continuously for 30 seconds to 1 minute or until desired doneness.
Since I was sort of sleep-walking while preparing our lunch/dinner, I thought the big chunk of meat was a solid piece that I could cut into chunks and throw into our stir -fry. I microwaved the whole piece and when I went to cut it, the precision laser-cut slices fanned themselves out. Wow!
Without reading the directions, I knew that these were delicate and over-cooking them would be a travesty. So, I sauteed up the skillet of veggies, laid the beef slices on top, took the skillet off the burner and put a lid on it for five more minutes while the rice finished cooking.
Perfect, except the slices did look incongruous in the stir-fry.
Now that I knew what I had, the following day, I teed up the remaining slices. I toasted some ciabatas from Costco (they call them something else, square guys), slowly caramelized three sliced onions, sauteed mushrooms and piled on six slices of the beef on each sammy together with some Horsey Sauce – creamy white from a bottle. WOW. It was quickly in competition for Best.Sandwich.Ever.
And we still have another chunk in the freezer!