Ironically, this recipe is in the new Good Housekeeping magazine:
Grilled Green Tomato Focaccia Sandwiches
1 large lemon
1/2 c light mayo
1/2 tsp coarsely ground black pepper
1 lb green tomatoes (3 medium), cut int 1/2 inch thick slices
1/4 tsp salt
1 T olive oil
8 slices Canadian bacon
1 loaf focaccia bread, cut horizontally in half
1. Prepare outdoor grill for direct grilling over medium heat.
2. From lemon, grate 1 tsp peel and squeeze 2 T juice. In cup, combine lemon peel and juice, mayo and pepper.
3. Sprinkle tomato slices with salt; brush lightly with oil. Place tomatoes on hot grill rack and cook, uncovered, 6 to 7 minutes or until browned and slightly softened, turning slices over once. On same grill rack, cook Canadian bacon 2 minutes or until heated through, turning over once. Transfer tomatoes and bacon to platter. Place focaccia, cut sides down, on grill rack. Grill 3 to 4 minutes until lightly toasted.
4. Assemble sandwiches: Spread mayo mixture on cut sides of focaccia. On bottom half of focaccia, layer tomatoes, then Canadian bacon. replace top half of focaccia. Cut into 4 pieces to serve.