Light a grill.

Heat the grill to medium-high heat.

Grill the bread slices for 2 minutes on each side, until golden brown and crisp.

Remove the bread from the grill.

If desired, rub each slice of grilled bread with a garlic clove.

Cut the ripe tomatoes in half.

Rub the cut side of the tomato halves onto the grilled bread, applying a thin layer of tomato pulp.

Drizzle each slice with Spanish extra-virgin olive oil.

Sprinkle with coarse sea salt and freshly ground pepper.

Serve immediately.