Divide the burgers so there are 4 oz per person, and divide that by 2. Form the 2 oz of meat into balls. Flatten the balls as thinly as possible.
Make the filling
Put the butter and blue cheese in a small bowl and mix them together with a fork.
Form the burgers
Put a tablespoon or mustard on four of the patties. This will be the bottom of the patty. Now put about a tablespoon of the cheese mixture on the mustard. Put the second patty on top. Use your fingers and firmly press on the edges. Form the patties and flatten them. Sprinkle each formed patty with Mis' Ruben's Black Magic and freshly ground black pepper.
Put the burgers in the refrigerator for about 30 minutes to let the flavors blend.
Make the dressing
Mix the remaining blue cheese with sour cream and mayonnaise. Refrigerate until ready to serve.
Cook the burgers
Heat a cast iron griddle to 470 °F (243 °C) or more. Spray with olive oil. Put the burgers on the grill, Black Magic side down. Cook until ready to flip, about 5 minutes. Flip the burgers, and then put the English muffins on the grill as well. Let the muffins grill for about two minutes.
Put some of the dressing on the inside of each muffin.
Use an instant-read thermometer to check that the burgers are done. Ground beef is done at 135 °F (57 °C).
Take a patty and put it on one of the muffins. Top with onions.
Top with cabbage.
But the muffin top on top of the cabbage. Your burger is done, please enjoy it.
Notes
For gluten-free, substitute gluten-free muffins or buns. You could also make these vegan by substituting plant-based beef and cheese.
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