Light your charcoals in your grill and allow to warm for 10 minutes. Clean the grill grates if necessary. (See notes for stove top or gas grill)
While the grill is heating up, pat the flat iron steak dry with paper towels. Drizzle each side of the steak with avocado oil and the seasoning. Use your hands to rub it in. Will make a paste.
1 teaspoon kosher salt, 1 teaspoon garlic powder, 1 teaspoon smoked paprika, 1/2 teaspoon chili powder, 1 pound flat iron steak
When the grill is hot, add on the steaks. Cook for about 5 minutes per side (until the steak has an internal temperature of 125ºF for medium rare). Transfer to a cutting board and allow to rest for 5 minutes.
Thinly slice the steak against the grain.
Serve warm on jicama wraps (or favorite keto taco shell) with sliced avocado, white onion, cilantro and lime.
Leftover steak will keep in an airtight container refrigerated for at least 5 days, or frozen for at least 6 months.
As always, lots of tips, FAQs and substitution info below in the Recipe Notes!