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Preheat oven to 375°F then line to sheet pans with parchment paper and set them aside.
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Chop the slices roast beef and provolone cheese into half inch to one inch pieces.
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In a large mixing bowl combine the chopped roast beef and provolone cheese with the cream cheese, ½ tablespoon of the onion soup mix with an electric hand mixer until combined.
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Using one can of crescent dough at a time, unroll the dough and separate it into triangles.
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Cut the triangles in half, so they form two long triangles.
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Add 1 heaping teaspoon of the filling onto the bottom, wider part of the roll. Roll the dough over the filling to form a crescent. Place it on the prepared sheet tray.
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Repeat with the remaining filling and dough, placing them not touching on the sheet trays.
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Brush the butter mixture all over the exposed crescent dough. Bake for 11-13 minutes until golden brown.
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While the puffs are baking, prepare the au jus gravy mix per the directions on the back of the package with the water.
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Garnish the puffs with fresh parsley if desired and serve immediately.