Lay the beef slices out on a clean work surface. Spread each beef slice with about 2 teaspoons of mustard and sprinkle with a little salt and freshly ground black pepper. Place a strip of bacon and piece of onion on each beef slice so it's running the same length as the beef. Roll up the beef slices, tucking in the sides as best you can and securing the beef rolls with toothpicks or cooking string.
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Recipe
Rouladen is a classic German dish that tantalizes the taste buds with its rich flavors and tender texture. Thinly sliced beef is rolled around a savory filling of mustard, bacon, onions, and pickles, then braised to perfection in a robust gravy, creating a hearty and satisfying meal typically enjoyed with mashed potatoes or red cabbage.