#1 Preheat your oven to 400°F #2 Roll out the puff pastry sheet on a lightly floured surface, and cut it into squares #3 Blanch the asparagus in boiling water for 1-2 minutes until slightly tender. Immediately transfer them to ice water to stop the cooking process. Pat the asparagus dry and set aside #4 Place the puff pastry squares on a baking sheet lined with parchment paper. Leaving a small border, layer each square with crumbled bacon, a few asparagus spears, and a sprinkle of shredded cheese. Season with salt and pepper to taste #5 Carefully fold the edges of the puff pastry over the toppings to create a border #6 Brush the edges with beaten egg to give the pastry a golden finish #7 Place the baking sheet in the preheated oven and bake for 15-20 minutes or until the puff pastry is golden brown and puffed up #8 Remove from the oven and let it cool for a few minutes. Serve the tarts warm.