In a large mixing bowl, add the ground beef, Worcestershire sauce, Montreal Steak Seasoning and smoked paprika. Lightly mix to combine.
Separate the beef mixture into four equal portions. Roll into balls and flatten to make patties.
Using your thumb, make a small indent into the middle of each patties. (This keeps it from puffing during grilling.) Refrigerate until you're ready to grill.
When you're hungry, fire up that grill! Make sure the grill is clean and well-oiled. Heat the grill to 375 degrees. Grill the burgers 3-4 minutes on side one to get a good sear before flipping. Continue grilling until the burgers are done to your liking. (See notes below) Add cheese the last minute of grill. Close the lid so the cheese.
Brush the burger buns with melted butter and toast until lightly brown.
Optional - When you remove the burgers from the grill, top with a small dab of butter.
Cover lightly with foil.
Now it's time to build the burgers! Slather each side of the bun with Smashburger Sauce. Building from the bottom bun, add lettuce, burger patty, tomato, onion, pickles, etc. Add the top bun and feast on your amazing burgers!