In a medium-sized bowl, gently stir together the tomatoes and the basil.
Add a couple of healthy dashes of the oil, and then add a couple of pinches of salt and pepper. Gently stir again.
Preheat a grill pan (or cast-iron skillet) over medium-high heat (or fire up your grill).
Brush the bread with the cut side of the garlic and then brush on some of the oil (only on one side of the bread).
Grill the bread until toasted on both sides, about 3 to 4 minutes per side.
Transfer the toasted bread to a platter, oil side up. Mound the tomato-basil mixture on top of each slice. Serve at once.
