Toss the tomatoes with 2 tablespoons oil, garlic and salt. Place cut side down in a 15x10x1-in. baking pan. Bake at 450° for 20-25 minutes or until tender. Chop when cool enough to handle.
Cook ziti according to package directions, adding broccoli during the last 4 minutes. Meanwhile, in a large skillet over medium heat, cook sausage in remaining oil until no longer pink. Add pepper flakes; cook 1 minute longer. Stir in tomatoes and heat through.
Drain ziti mixture; toss with sausage mixture. Sprinkle with cheese.