1-1/2 cups half-and-half cream
4 large eggs, room temperature
1 unbaked pastry shell (10 inches)
2 cups (8 ounces) Monterey Jack cheese, divided
1/4 tsp. dried thyme
1/4 tsp. pepper
1 tsp. salt
4 large tomatoes, peeled, seeded, chopped and drained
2 tbsp. butter
1 cup chopped onion