Pasta With Rustic Lamb Tomato Sauce

Name: Pasta With Rustic Lamb Tomato Sauce
Ingredients: 1 Tablespoon olive oil; 1 Cup chopped onion; 2 cloves garlic, finely chopped; 12 Ounces boneless leg or shoulder of lamb, sliced in thin strips (12 ounces of ground lamb may be substituted); 1 medium zucchini, thinly sliced; 10 small white mushrooms, sliced; 14.5 Ounces diced tomatoes and juice; 3 Tablespoons chopped fresh basil leaves or 1 tablespoon dried basil leaves, crushed; 1/2 Teaspoon pepper; 1/4 Teaspoon seasoned salt; 8 Ounces pasta, cooked and drained; 1/4 Cup sliced and drained ripe olives (optional)