Prepare seasoning oil: Heat oil in a small skillet over medium-low heat. Add garlic, basil and red-pepper flakes; cook, stirring, 5 to 7 minutes or until garlic is golden. Cool the oil and strain.
Meanwhile, prepare tomato topping: Stir together tomatoes, basil, vinegar, oil, salt and pepper in a large bowl.
Heat oven to 500 degrees F.
Brush cut sides of split bread with about 2 tablespoons seasoning oil. Place on a baking sheet. Bake in heated 500 degree F. oven 3 to 5 minutes or until golden.
Slice toasted bread into 2-inch widths and arrange on a large serving platter. Spoon tomato topping over and garnish with fresh basil leaves.