Raphael Lunetta's grilled salad is inspired by vegetables his aunt would prepare at her home in Collioure, France. The fennel and onion are cooked on the grill so they char slightly before braising in foil with the tomatoes and lemon vinaigrette.
Light a grill or heat a lightly oiled grill pan. In a bowl, toss the fennel wedges with 2 tablespoons of the olive oil and season with salt and pepper. Brush the onion slices on both sides with 1 tablespoon of the olive oil and season with salt and pepper. Grill the fennel and onion over a medium-hot fire for about 4 minutes per side, or until lightly charred and just tender. Alternatively, cook the fennel and onion in the grill pan over moderate heat for about 5 minutes per side.
Lay two 2-by-3-foot pieces of heavy-duty foil on top of each other and put the tomatoes in the center. Add the grilled fennel and onion slices and season the vegetables with salt and pepper.
In a small bowl, combine the vinegar, lemon juice, garlic and mustard and blend in the remaining 2 tablespoons of olive oil. Spoon the dressing over the vegetables, then seal the foil package.
Set the vegetable package over a medium-hot fire and grill for 5 to 7 minutes, or until bubbling inside. Alternatively, set the package in the grill pan and cook over moderate heat for 5 to 7 minutes. Remove from the heat and let stand for 3 minutes. Carefully open the foil and sprinkle the vegetables with the basil and mint. Serve hot or warm.