INGREDIENTS
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3 tablespoons olive oil
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1 large onion, thinly sliced
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1 sheet of puff pastry, unthawed
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Flour, for dusting
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1 bunch of asparagus, about 10
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2 small handfuls of cherry tomatoes
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¼ cup goat cheese, crumbled
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Maldon, or another flaky salt, for sprinkling