
2 medium tomatoes, seeded and diced (about 1 cup)
¾ cup chopped red onion
½ cup chopped fresh basil, plus additional for garnish
4 tablespoons extra-virgin olive oil, divided
Sea salt, to taste
Cracked black pepper, to taste
3 medium unpeeled garlic cloves
10 baguette slices
2 tablespoons unsalted butter, softened