Stack 5 basil leaves one on top of each other; roll up. Slice crosswise thinly. Repeat with remaining basil. Combine tomatoes, balsamic vinegar and basil. Season with salt and pepper.
Combine olive oil and garlic in a small microwave-safe bowl. Microwave on high 30 seconds.
Cut bread into slightly angled 1/4-in. pieces. Brush with olive oil mixture; place on baking pan. Bake at 425° for 6-8 minutes or until golden brown. Just before serving, drain excess liquid from tomatoes. Spoon mixture evenly over bread slices. Serve immediately.