"This Croque Tartiflette recipe includes potatoes and Reblochon cheese, just like the famous Tartiflette casserole. For creaminess, add homemade Béchamel sauce...."
INGREDIENTS
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2 tablespoons mustard
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8 tablespoons Béchamel sauce, divided
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8 slices sandwich bread
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4 ounces baked ham, thinly sliced
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8 thin slices cooked red-skinned potatoes
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8 slices Reblochon cheese (enough to fill 4 sandwiches)
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4 tablespoons butter, softened