INGREDIENTS
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1 tablespoon olive oil, divided
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1 1/2 cups chopped onion
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2 garlic cloves, minced
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9 cups (1-inch) sliced zucchini (about 2 1/2 pounds)
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5 cups fat-free, less-sodium chicken broth
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1/2 teaspoon salt
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1/2 teaspoon freshly ground black pepper
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16 (1/4-inch-thick) slices French bread baguette (about 4 ounces)
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Cooking spray
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1 garlic clove, halved
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3/4 cup fresh flat-leaf parsley leaves
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3 tablespoons fresh tarragon leaves
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3 tablespoons chopped fresh chives
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1 teaspoon fresh lemon juice
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1/8 teaspoon salt
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1/8 teaspoon black pepper