Preheat oven to 450º F.
Slice tomato and place on baking sheet. Drizzle with olive oil, balsamic vinegar, and a sprinkle of sea salt. Roast for 8 minutes.
Lightly toast slices of baguette and top with a leaf or two of basil on each.
Lay the roasted tomato atop the basil and sprinkle with toasted pine nuts. Serve.
You can toast raw pine nuts quickly in a pan or a toaster oven — just make sure they don’t burn!