1. Preheat oven to 450°.
2. Remove casing from sausage. Cook sausage in a large nonstick skillet over medium-high heat until browned, stirring to crumble. Add onion, pepper, and mushrooms to pan; sauté 8 minutes or until tender. Stir in garlic; sauté 1 minute. Place crust on a large baking sheet. Spread pasta sauce evenly over crust, leaving a 1/4-inch border. Top evenly with mushroom mixture. Sprinkle evenly with cheese. Bake at 450° for 8 minutes. Remove from oven; sprinkle evenly with basil. Cut pizza into 8 wedges.