Preheat the oven to 425, and line a baking sheet with parchment paper.
Divide burger patties in half and place 4 cheese squares in between each half patty. Seal sides and cook in a cast-iron pan on medium-high heat until medium rare. Remove from heat and set aside while you prepare the Wellington wraps.
Lay out a puff pastry rectangle and place a burger in the center. Top with mustard and wrap the bacon around the burger. Remove excess puff pastry and fold dough around the wrapped burger, forming a tightly sealed package. Seal sides with egg wash and top with sesame seeds. Repeat with remaining burgers. Place on a baking sheet and bake for 20 to 25 minutes until puff pastry is golden. Let rest for 5 minutes, and serve with lettuce, tomatoes and your favorite condiments.
Recipe by The Best Video Recipes for All at https://recipes-for-all.com/bacon-burger-wellington/