Mix the beef with the sauce, onion, cheese powder, and spice. Divide the meat into four sections, 4 oz each. Put them in a patty form and make patties out of them.
You can freeze them from here, or continue.
Get the grill very hot and oil it. Put the patties on the grill, wait a minute, and turn 1/4. This will create lovely hash marks. Then after about 3 and a half minutes, flip the burger, again turning 1/4 at the one-minute mark to create the hash marks. Let the burger cook to your liking, for an additional one or two minutes. Use an instant-read thermometer to determine doneness.
When the burgers are done to your liking, remove them from the grill. Put the buns on the grill, face side down, and let them toast for about 30 seconds. Remove them from the grill and top them with the cheese, spinach leaves, and tomato slices. If you want, you can add other toppings.
Notes
You are more than welcome to add additional toppings or spreads to the burger bun. Enjoy!
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