Cut the your beef into thin stripes. (It is easier to cut when you freeze the beef before cutting to make your stripes come out smooth)
Mix your crushed kuli kuli with all your spices and rub the beef with the mix. Pour the oil over the beef and leave it to marinate for about 3 hours. (Tip: rub oil on your hands before handling the spices as you would be handling chilli powder or wear gloves)
You can choose to place the beef in skewers or leave as is.
Preheat your oven to 375 degrees, line the oven tray with foil and grease the foil with oil then place the seasoned beef on the foil and place in the oven to grill for 20 minutes, turn it over to brown for another 10 minutes. Make sure to check if the beef is cooked. Check for seasoning correction and re-season as necessary. (If the beef is not browning but is cooked, increase the temperature of the oven and allow to brown for a few extra minutes)
Serve with onions and tomatoes as garnish.
p:s – If you have the Suya spice mix, you can skip the step of mixing the spices and just rub your suya mix on with oil on the beef. You may choose to add more seasoning cubes or chilli powder.