INGREDIENTS
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16 jumbo shells
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Basic Béchamel
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2 tbsp. Dijon mustard
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1 tsp. Worcestershire sauce
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3 c. rotisserie chicken
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3/4 c. Gruyère cheese
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2 oz. thinly sliced deli ham
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1/2 small red onion
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1 tbsp. chopped fresh tarragon
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1/2 tsp. Pepper
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1/2 c. panko bread crumbs
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1 1/2 tbsp. olive oil