Step 1

Preheat the oven to 350 degrees F.

Step 2

Place the tomatoes still on the vines (plus any that fall off the vines) on a sheet pan. Rub or brush gently with olive oil and sprinkle generously with kosher salt and pepper.

Step 3

Roast for 10 to 15 minutes, until the tomatoes are tender and a few start to split. Sprinkle with basil, if using, and fleur de sel, and serve on the stem hot or warm.