INGREDIENTS
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1/2 cup (1/2 of 8-oz. tub) PHILADELPHIA Cream Cheese Spread
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1/2 cup plus 1 Tbsp. butter, softened, divided
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1-1/2 cups plus 2 Tbsp. flour, divided
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1/2 lb. fresh mushrooms, finely chopped
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1 small onion, finely chopped
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1/4 tsp. dried thyme leaves
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1/4 cup BREAKSTONE'S or KNUDSEN Sour Cream
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1 egg, beaten