While the grill is heating up, prepare the vegetables: cut the peppers in quarters or half, slice the onions about a half an inch thick
Brush the oil onto the vegetables
Sprinkle the spice rub on the room temperature beef
Once the grill is hot, using a brush rub some olive oil onto the grates, and add the steak and grill for two to three minutes over medium - high heat, then reduce to medium heat, flip and cook until steak is cooked to your preference.
While steak is cooking add the vegetables to the grill and cook for 4 to 5 minutes on each side.
Remove the steak from the grill and allow to rest for 5 minutes
Remove the vegetables from the grill and cut them into slices