For the rub:
1/4 cup of finely ground Arabica coffee or other coffee
3 tablespoons of packed brown sugar
2 tablespoons of chili powder
2 tablespoons of paprika
1 tablespoon of ground ancho chili
2 teaspoons of ground cumin
1 teaspoon of dry mustard
2 teaspoons of salt
1/2 teaspoon of freshly ground black pepper
1/4 teaspoon of cayenne pepper
For the steak:
1 tablespoon of olive oil
1 1/2 pound of flank steak
- Combine the rub ingredients in a bowl and mix well. Transfer all but 3 tablespoons to a covered container for future use.
- Brush the oil over the steak; sprinkle both sides with the 3 tablespoons spice rub.
- 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.