||Cut each sirloin steak into cubes, thread on to metal skewers with red onion wedges. Brush each skewer lightly with oil. Season with salt and pepper. Preheat the char-grill pan to hot before adding the meat.
||Let the beef skewers cook on one side until moisture appears before you turn. Cook for 2-3 minutes on each side. Remove from the heat and cover loosely with foil, rest skewers for 3 minutes before serving.
||Serve beef skewers with the warm tomato vinaigrette.
||To make the tomato vinaigrette: heat the oil in a small pan, add the tomatoes, garlic, sugar, salt, pepper and parsley. Cook over a high heat for one minute to just soften the tomatoes.
||Serving suggestion: Serve with a green salad.