Preheat oven to 225F.

Slice tomatoes in half lengthwise.

Lay cut side up on parchment-lined baking sheets.

Brush with olive oil and sprinkle with sea salt.

Place garlic cloves in between tomato halves.

Roast for 4 hours.

Eat immediately or store in refrigerator with extra olive oil drizzled on top.  Can use in pasta, to top chicken or beef, or just for snacking!