Ingredients

4 pounds assorted heirloom tomatoes (preferably a mix of colors), cut into 1/2-inch pieces 

2/3 cup best-quality extra-virgin olive oil 

Coarse salt and freshly ground pepper 

2 baguettes, cut in half horizontally 

2 garlic cloves, peeled 

1 large red onion, quartered and thinly sliced 

2 cups fresh basil leaves 

Preparation

Preheat grill or broiler to high. Combine tomatoes, oil, 1 tablespoon salt, and pepper to taste in a large bowl.

Toast cut side of baguette halves on grill or under broiler 1 to 2 minutes. While still hot, lightly rub cut surface with garlic. Spoon tomato mixture over bread with a slotted spoon, then add onion. Tear basil into pieces, and scatter on top. Slice each baguette half into 3- or 4-inch-long pieces (about 12 slices per baguette).