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Export 15 ingredients for grocery delivery
Step 1
In a small bowl, mix the mayonnaise, cheese, vinegar, rosemary, garlic powder, salt, sugar, and pepper. If not using right away, keep in an airtight container in the fridge (the rosemary flavor will become more pronounced as it sits, which I love).
Step 2
In a small bowl, gently mix the beef, onion, Worcestershire, rosemary, cinnamon, cumin, salt, and pepper until just combined (I use my fingers). Form into a single patty, about the size of your burger bun, making sure to press a shallow indentation in the center so it stays flat when you sear it.
Step 3
Brush the patty with some oil and place onto a hot griddle or small frying pan. Cook for 3 minutes on one side, then turn and continue to cook for about 2 minutes more (an instant-read thermometer should register 145°F for medium-rare and 160°F for medium). Let rest for about 5 minutes.
Step 4
To assemble, arrange a healthy pile of arugula on the bottom bun, then the warm patty (which will wilt the lettuce slightly), followed by the top bun, which should be smeared generously with the blue cheese mayo.
Step 5
Eat with french fries or potato chips and a cold beer.
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