Croque Monsieur Pop Tarts
All of the ingredients in a classic croque monsieur get stuffed in between buttery sheets of puff pastry.
Recipe Ingredients
2 sheets of puff pastry cut into 12 even rectangles
1 ½ tablespoons butter
2 tablespoons flour
1 cup warm whole milk
½ teaspoon Dijon mustard
¼ salt
6 thinly sliced pieces of prosciutto
1 cup shredded gruyere cheese
1 egg + 2 tablespoons water whisked together.