To bake tomatoes and pan-fry burgers, preheat oven to 425F (220C). Stuff tomatoes as directed above. Place in a pie plate. Bake, uncovered, until tomato filling is hot inside, about 8 minutes. Then turn on broiler and broil tomatoes for 3 minutes. Meanwhile, brush burgers with salad dressing. Cook in a large frying pan set over medium heat until no pink remains in centre of burgers, at least 5 to 6 minutes per side.