Rinse, pat dry and slice fresh mushrooms (makes about 2-3/4 cups) or drain canned mushrooms; set aside. In a medium bowl combine oil, vinegar, garlic, salt, sugar, basil, cumin and black pepper; mix well. Add mushrooms; toss to coat completely; let stand for 5 minutes. Spoon over lettuce wedges or toss with mixed greens. Yield: about 1-1/4 cups.