"From Adrianna Adarme of the Fresh Tastes blog: Frozen puff pastry is a quick way to make a tart...."
INGREDIENTS
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1 sheet of puff pastry
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1 tablespoon of all-purpose flour
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1 large egg, lightly beaten in a small bowl
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1/4 cup grated Parmesan-Reggiano cheese
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3/4 cup shredded Gruyere cheese
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3/4 teaspoon red pepper flakes
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1 pound of thick-stemmed asparagus, washed and ends trimmed
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Pepper
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Zest from 1/2 lemon