Horseradish Roquefort Burger

• 1 1/2 pounds 80% lean, coarse ground beef, cold (keep the meat in the fridge until you are ready to cook)
• salt and pepper
• 4 large hamburger buns of your choice
• (use a sturdy roll that has a texture more like a ciabatta, with a good chew)
• good quality mayo and prepared horseradish, equal parts, mixed together well
• 4 - 6 ounces Roquefort, or any good quality blue cheese, divided into 4 parts and chilled
• fresh baby arugula
• 1/2 large red onion, thinly sliced

1. Heat a flat top, cast iron skillet, or nonstick skillet to medium-high. Have all your burger ingredients ready for assembly on your counter.
2. Form ground beef into 4 patties. Don't pack the meat, or handle it too much. Use a light hand for tender, juicy burgers. Season with salt and pepper. Grill for 3 to 5 minutes per side, depending on your taste. Remove to a clean platter.
3. While burgers are grilling, lightly toast the cut side of your buns. Remove to a clean platter.
4. Now build your burger!
5. Spread both cut sides of buns with horseradish mayo.
6. On the bottom bun, place a small handful of arugula, followed by a hot burger, then some cold cheese, some sliced onions, and another dollop of horseradish mayo, if you like. Put your bun tops on, and have at it!

lean, salt, buns, mayo, blue cheese, fresh baby arugula, red onion

Taken from food52.com/recipes/5763-horseradish-roquefort-burger (may not work)