Preheat grill or BBQ plate
Blend or process until smooth.
Combine ingredients in a food processor or blender.
Remove and spread over steaks and refrigerate for several hours or overnight
Remove from fridge and bring back to room temperature
Wipe excess marinade from steaks and grill. Retain excess marinade to baste over whilst cooking
Place marinated steaks onto hot grill plate, sear and cook steaks until tender or done to the desired tenderness
Whilst cooking steaks, baste with reserved marinade
Remove steaks and allow to stand for several minutes and serve