Instructions:

Prepare the Beef:
Make cuts about 2–3 cm apart across the top of the beef, ensuring the slices remain connected at the bottom. This creates spaces for the seasoning to infuse into the meat.
Make the Seasoning Mix:
In a small bowl, combine the mustard, ketchup, salt, pepper, paprika, and nutmeg. Mix well to create a thick, flavorful paste.
Season the Beef:
Spread the seasoning mixture generously into the cuts you made in the beef. If using onions and garlic, place 1–2 slices of onion and a bit of garlic into each cut. Use any remaining seasoning to coat the outside of the roast.
Cook the Roast:
Place the seasoned beef in a roasting pan or oven-safe dish. Add 1 cup of water to the pan to keep the roast moist.
Cover the pan with a lid or foil and bake in a preheated oven at 220°C (425°F) for about 2 hours.
Crisp the Roast:
After 2 hours, remove the lid or foil and let the roast cook uncovered for an additional 20 minutes. This will help the outside crisp up and develop a delicious crust.
Serve and Enjoy:
Let the roast rest for a few minutes before slicing. Serve with your favorite sides like bread, roasted potatoes, or steamed vegetables.
Tips:
This roast is perfect for parties or family meals because it stays warm in the oven and tastes even better as it rests.
Feel free to adjust the seasoning to your family’s taste preferences.
Enjoy this comforting and flavorful roast with your loved ones!