Bechamel Sauce

• Melt the butter in a small pot
• Stir in the flour continuously until solid
• Whisk in the milk
• Stir continuously until thick

Pastries

• Cut the puff pastry sheets into squares
• Mix together the cooked onions, ham and cheese and add to bechamel sauce
• Egg or milk wash the corners of the pastry squares
• Spoon 1tbsp of the sauce mixture into the center of each square and bring the corners into the center and pinch to seal