The tomatoes: Preheat the oven to 375°F. Add tomatoes to a cocotte and drizzle with olive oil, sea salt and pepper. Cook for about an hour or until the tomatoes have burst. Remove from oven and let cool.
The bacon: Meanwhile, add slices of bacon to a skillet and cook for about 4 to 5 min per side or until desired crispiness.
Slice apples, and toast bread. Add mayo to one side of the bread, and jam to the other. Add arugula, roasted tomatoes, bacon, apples and red onion. Close sandwich and slice. Enjoy!