INGREDIENTS
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One 6-ounce baguette, cut into 1/4-inch-thick slices
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1/4 cup extra-virgin olive oil, plus more for drizzling
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Salt and freshly ground pepper
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2 medium zucchini (1 pound), cut into 1/2-inch dice
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1 large red onion, cut into 1/2-inch dice
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1/2 teaspoon chopped thyme
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1/2 cup low-sodium chicken broth
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1/4 cup heavy cream
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1/2 cup shredded Gruyère cheese
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1/4 cup freshly grated Parmigiano-Reggiano cheese
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4 medium tomatoes (1 1/2 pounds total), sliced 1/4 inch thick