Baked Tomato Parmesan

Directions

1. 1
   Halve the tomatoes; sprinkle with onion salt and herbs.
2. 2
   Put tomatoes in a Pyrex dish; place in a warm oven (275° to 300°) for 5 minutes.
3. 3
   Set aside and cool.
4. 4
   Mix mayonnaise, onion and Parmesan cheese; spoon over tomatoes.
5. 5
   Just before serving, place in oven on broil setting until puffed and lightly browned, about 3 to 5 minutes.