Fillet of Cod with Asparagus and Prosciutto

Name: Fillet of Cod with Asparagus and Prosciutto
Ingredients: 1 1/2 pounds slender asparagus spears, trimmed to 7-inch lengths; 2 garlic cloves, minced; 1 teaspoon salt; 2 tablespoons (1/4 stick) butter; 1 tablespoon plus 6 teaspoons olive oil; 1/3 cup fresh lemon juice; 1 1/2 teaspoons grated lemon peel; 1/2 teaspoon ground black pepper; 6 6-ounce cod fillets, pinbones removed; 6 ounces paper-thin prosciutto slices, halved lengthwise