Peel and crush the garlic. Add to the oils and slowly heat. Before it burns, turn off heat and let sit. When cool, marinate the steaks in the oil for 2 hours or overnight.
Season the steaks and place on a hot grill. Grill until cooked through, turning once. Drop the mushrooms into the marinade. Grill the mushrooms, then slice.
Recipe courtesy of Wayne Harley Brachman