Heat oven to 350° F.
Drain onions well; pat dry.
Spray shallow, oven-proof dish (3-4-cup size) with nonstick cooking spray. Place onions in dish. Press with spatula to flatten and crush.
Sprinkle with 1 tablespoon tomatoes, garlic, 2 tablespoons basil and black pepper, to taste. Drizzle with 1/2 tablespoon oil.
Cut goat cheese into 6-8 rounds. Arrange over onion mixture. Sprinkle with remaining tomatoes; drizzle with remaining oil. Sprinkle with herb seasoning, if desired.
Bake uncovered 20-30 minutes, or until cheese is soft and mixture is bubbly. Sprinkle with remaining basil. Serve warm with crackers, flatbread or pita chips, if desired.