Prepare the Big Mac Sauce.
In a medium bowl whisk mayonnaise, relish, mustard, paprika, sugar, onion powder, beef bouillon, garlic powder, salt and pepper.
Refrigerate until ready to use.
For the burgers mix the minced dried onion with the water and set aside to rehydrate.
Divide the meat into 8 portions and make 8 thin patties.
Season with salt and pepper.
In a large skillet over medium-high heat, cook 4 patties at a time, flipping once until cooked through, about 2 minutes per side.
Set aside on paper towel lined tray while you repeat with the other 4 burgers.
Scoop the minced onions out of the water and onto a paper towel lined plate to drain.
In another large skillet melt the butter over medium high heat and toast each of the buns lightly in the pan and set aside.
Next assemble the burgers.
Start with the bottom bun and spread with a little of the big mac sauce, then the cheese, some lettuce, pickles, a patty, onions, another bottom bun, sauce, lettuce, pickles, patty, onions, top bun.
Repeat with the rest of the burgers and serve!