Arabica Spice Rubbed Flank Steak

For the Rub:

1/4 cup finely ground Arabica coffee, or other coffee

3 tablespoons packed brown sugar

2 tablespoons chili powder

2 tablespoons paprika

1 tablespoon ground ancho chili

2 teaspoons ground cumin

1 teaspoon dry mustard

2 teaspoons salt

1/2 teaspoon freshly ground black pepper

1/4 teaspoon cayenne pepper

For the Steak:

1 tablespoon olive oil

1 1/2 pound flank steak

1. Combine the rub ingredients in a bowl and mix well. Transfer all but 3 tablespoons to a covered container for future use.
2. Brush the oil over the steak; sprinkle both sides with the 3 tablespoons spice rub.
3. Preheat nonstick grill pan over medium heat until hot. Add the flank steak and cook, turning once, 8-10 minutes for medium-rare. Transfer steak to a cutting board and let rest 5 minutes before thinly slicing against the grain.