Brush Topknot with butter and sprinkle over Everything Spice, then bake according to ourheating instructions.
In a medium bowl, gently mix ground beef, salt and pepper. Form into one patty the size and shape of the center of your Topknot.
Warm up your grill, if using a propane grill heat to 400 degrees. Cook burger for 5-10 minutes (depending on how well done you prefer). Place cooked patty into pretzel hole.
Heat small skillet to medium heat, crack the egg into the pan and cover with a lid. Let cook until egg whites set.
Transfer pretzel with patty to plate, top patty with egg and garnish with smoked salmon, onion, avocado, cream cheese, capers and chives.