01 -
If necessary, cut the beef slices to roughly 10×10 cm pieces to ensure uniform rolls.
02 -
Lay each beef slice flat on a clean surface. Evenly spread a thin layer of mustard over each piece. Top with a portion of onion, a strip of bacon, a carrot stick, and a pickle stick. Lightly season with salt and pepper. Roll up the beef tightly around the filling and secure each roll with a toothpick. Repeat with remaining ingredients.
03 -
Heat vegetable oil in a large skillet over medium-high temperature. Working in batches, sear the beef rolls on all sides until well-browned. Transfer browned rouladen to a large Dutch oven or sturdy oven-safe pot.
04 -
In a mixing bowl, combine flour and water to make a smooth slurry. Pour approximately 240 ml of the slurry into the skillet with any browned bits left from searing, whisking continuously until thickened. Add 60 ml of red wine, simmering for several minutes. Pour this mixture over the beef rolls in the Dutch oven. Repeat in batches until all rouladen are covered with gravy.
05 -
Preheat the oven to 175°C. Cover the Dutch oven with a tight-fitting lid and bake for 150 to 180 minutes, or until the beef is exceptionally tender.
06 -
Allow rouladen to cool slightly. Remove toothpicks before serving. Present with spaetzle, red cabbage, mashed potatoes, or sides of choice.