Lotsa Pasta Grilled Portobellos 6 large portobello mushrooms 1 1/4 cups garlic olive oil 1/4 cup Worcestershire sauce Garlic salt Thickly slice mushrooms. Whisk together garlic olive oil and Worcestershire. Toss mushrooms in marinade. Sprinkle with garlic salt. Grill over high heat (preferred method) or place under a broiler for 2 or 3 minutes on each side. These may be eaten like steak or sliced thinly for use in sandwiches, wraps or salads.