1. Preheat oven to 400°F. Stir together butter, shallots, basil and garlic in a small bowl.
2. Place each swordfish steak on a 12-inch piece of parchment paper. Season lightly with salt and pepper then spread half the butter over the top of each. Top with lemon slices, tomatoes and olives.
3. Bring up 2 sides of parchment and fold over twice; fold under ends to enclose. Place on a baking sheet and cook for 20 to 25 minutes or until swordfish is cooked through. Serve over hot cooked orzo or your favorite pasta.
Butter mixture may be prepared several days ahead and stored tightly covered in the refrigerator.