Rinderrolladen (Stuffed Beef Rolls)

4 pieces of very thin beef cut from a round steak, about 4" x 10" x 1/4"
salt and pepper
4 t prepared mustard, divided
4 slices bacon OR 4 T real bacon bits, divided
4 T dried parsley, divided
8 t finely chopped onion, divided
1 large dill pickle, quartered lengthwise OR 1 c pickled salad mix (I use Kruegermann's)
2 T oil
2 c water
1 T cornstarch dissolved in 2 T water

Lay out the four pieces of beef on a flat surface. Sprinkle with salt and pepper, then spread each one with a teaspoon of mustard. Sprinkle each with bacon bits or lay a piece of bacon lengthwise on the meat. Next, sprinkle each piece of meat with a tablespoon of parsley and 2 teaspoons of onion. If you're using the whole pickle slice, lay it crosswise along the widest end of the meat. If you're using the pickle mix, put about a quarter cup of it on the widest end of the meat. Roll up the meat, widest end first, and then fasten the narrow end to the roll with a toothpick. (I used to go to the trouble of tying these with dental floss, but it took way too much time and effort. A toothpick works fine. You can see in the picture above that I used a blue toothpick!) Heat oil in a large skillet, and brown the meat rolls on all sides. Add water, cover, and simmer over low heat at least 30 minutes. Remove rolls to a serving platter or to plates, and add cornstarch-water mixture. Bring heat to medium-high and stir, about a minute or two, until gravy is thickened. Serve gravy over meat rolls with rice or dumplings.