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["In a sandwhich bag, mix together the cumin, garlic powder, paprika, chili powder, onion, salt, pepper, and cayenne pepper.", "Combine remaining ingredients (only 2 tbsp olive oil) except steak into a freezer bag or large container for marinating.", "Add 3 tbsp of the spice mixture to the marinade and mix to combine.", "perforate steak with a fork in multiple places.", "add steak to marinade and remove excess air.", "refrigerate for 4-24 hours (preference).", "When ready to grill, mix remaining spice mix with 2 tbsp olive oil.", "Remove steaks from marinade and pat dry (don't remove spices, just so they aren't wet).", "rub the spice mix/olive oil combo all over the steaks and let them rest at room temperature for 30-60 minutes.", "Preheat grill or skillet (preferably cast iron) to medium heat (about 5/10).", "Cook for 5-6 minutes per side depending on thickness. (see below for detailed notes).", "Remove steak from heat and let rest for 10 minutes before thinly slicing.", "For cooking in a cast iron skillet:", "Gas stove: set to 5/10.", "Cook for 5 minutes per side for medium (if steak is ~1/2""-3/4"" thick).", "*Important* Do not flip before 5 minutes is done!"]