INGREDIENTS
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8 tablespoons (1 stick) butter
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1 small yellow onion, chopped
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1 cup sliced mushrooms
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Salt and pepper to taste
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2 tablespoons all-purpose flour, plus more for dusting
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1 cup heavy cream
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1/4 cup clam juice
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1 pound jumbo lump crabmeat (I get mine at Costco)
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1 cup frozen peas
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2 sheets frozen puff pastry, thawed (Pepperige Farm)
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1 egg, beaten with 1 teaspoon water, to brush pastry