Soak your cherry wood grilling plank for ideally 2 hours in water.
Wash the tomatoes and pat them dry with a paper towel.Cut the tops off the tomatoes, hollow them out, and dice the scooped-out tomato flesh.
Halve, seed, and wash the bell peppers, then cut them into small cubes as well.
Also wash and trim the spring onions and cut them into fine rings. Peel and coarsely chop the garlic.
Wash the rosemary, pat it dry or shake it dry, pluck the needles from the stem, and finely chop them.
Heat some oil in a pan and sauté the spring onion rings, garlic, and diced bell peppers over medium heat for about 3 minutes. Then stir in the tomato cubes and season with salt, pepper, and the vinegar.
Grate the cheese, fill the hollowed-out tomatoes with the sautéed vegetables, and then sprinkle with cheese and the chopped rosemary before placing the tomato lids back on.
Preheat your grill to approx. 180°C and prepare it for indirect grilling.
Remove the grilling plank from the water bath and place the stuffed tomatoes on it. Now, place the cherry wood plank on direct heat or directly over the coals for about 3 minutes.
Once you notice the scent of cherry wood, it is time to move your cherry wood plank to the indirect zone of the grill.
Let your stuffed tomatoes cook on the cherry wood plank with the lid closed for about 12-15 minutes. As soon as the cheese has melted, your stuffed tomatoes are ready to be enjoyed.