Mega Meatloaf Sandwich

Cut a star out of the bottom of a Pringles can with a box cutter. Cook the potatoes in water and drain. Mix in the butter, grated parmesan, cornstarch, and a pinch of salt and pepper. Add the mashed potatoes into the can of Pringles, placing the cover on the bottom. Set aside in the fridge.

In a salad bowl, mix the ground beef, 1 chopped onion, garlic powder, rosemary, thyme, salt, and pepper. On a sheet of parchment paper, spread the ground meat into a large rectangle. Then spread a line of grated cheddar cheese lengthwise, roll up to form a long sausage, and set aside in the fridge.

Take out the Pringles can and wrap 1 onion in plastic wrap. Then place the onion in the Pringles can and use a rolling pin to help push out the mashed potato stars. Using a knife, cut a dozen mashed potato stars about 1 centimeter thick and set aside in a cool place.

Cook the beef roll on an electric griddle on each side. Fry the mashed potato stars in hot oil until golden brown and drain on paper towels.

Cut the puff pastry into 4 rectangles of equal size. Brush the first one with water and place another rectangle on top. Repeat with each layer. Flatten with a rolling pin. Cover the rolling pin with parchment paper and place the puff pastry on top to give it a shape. Next brush with egg yolks and bake for 20 minutes at 350 °F. Chop 2 onions and caramelize in a pan with a drizzle of oil. Take the puff pastry out of the oven and place a layer of caramelized onions on top of the beef roll. Then cover with caramelized onions, drizzle ketchup and mustard on top, and decorate with mashed potato stars. Serve and enjoy!