Ingredients:

1 beef chuck roast (about 4-lbs, 1 1/2-inches thick)
1/3 cup olive oil
3 green onions with tops, finely sliced
4 tsp sugar
1 1/2 tsp kosher salt
1 tsp worcestershire sauce
1 tsp prepared mustard
1/3 tsp pepper

Directions:

Score fat edges of roast. Place meat in a shallow dish. Combine oil,green onion, sugar, salt, worcestershire, mustard, and pepper. Pour over roast. Cover and marinate overnight in the refrigerator, turning roast several times.

Bring marinade to boil in a saucepan and simmer for sevaral minutes. Grill the roast over medium heat for 15 to 20 minutes. Turn and cook another 15 to 20 minutes, or longer. Remove from grill and carve across the grain to slice. Spoon marinade over top. Serves 6-8.