• As a note, I like to use the puff pastry here that isn't perforated. I don't ever use the Pepperidge Farm brand. I almost always use the wewalka brand or the jus-rol puff pastry.
• Preheat the oven to 425 degrees F. Place each of the puff pastry sheets on a piece of parchment paper on baking sheets. You can only make one sheet at a time, but I like to have the other one ready to go too.
• Cut both sheets of puff pastry into six squares on the parchment paper. .
• Heat a skillet over medium heat. Add the ground beef with a big pinch of salt and pepper. Cook until browned, breaking it apart into small crumbles. Stir in the ketchup and mustard until combined. Turn off the heat and add in a sprinkle of cheese - just an ounce or two. Let the beef cool slightly.
• If you haven’t made the house sauce yet, make it now!
• Once the beef has cooled a bit, spoon 2 to 3 tablespoons into the square of puff pastry. Drizzle on some house sauce. Sprinkle with a bit of cheese. Brush the edges of the square with the egg wash, then bring one corner to meet the other, making a triangle pocket. Press the edges down with a fork to seal them. Repeat with the remaining puff pastry.
• Brush the tops of the pockets with the egg wash. Sprinkle all over with the sesame seeds.
• Bake the puff pastry pockets for 20 minutes, or until golden and puffed and shiny. Remove them from the oven and let cool slightly - the insides are super hot! Serve with condiments, lettuce, tomato, pickles and anything else you love with a burger.

house sauce

• Whisk all ingredients together until smooth and combined. You can make this a day or so ahead of time!