In a large bowl, combine the lemon juice, spices, and Peetz S.M.A.R.T (Sorghum, Millet, Arrowroot, brown Rice, Tapioca) Blend. Whisk.
Place the steak in the bowl and coat both sides.
Refrigerate for 1-4 hours, while turning occassionally.
Meanwhile, place a caste iron grill over medium heat.
Once it heats up, brush it with olive oil.
Add the steak and cook on both sides for a total of 9- 15 minutes depending on desired doneness.
Remove from pan and let cool on a cutting board.
Holding the knife at a 45-degree angle slice across the grain.
Plate on a large platter, with avocados, lime wedges and tortillas, so everyone can build there own.
Serve (red) tomato or (green) tomatillo salsa in bowls to accompany the Steak Avocado Fajitas.