Start by making your spice rub. Combine onion salt, garlic powder, Lawry's seasoning, black pepper, coconut sugar, salt, parsley. Rub the mixture all over your meat front and back.
Place your meat in a large ziplock bag and drizzle with avocado oil. Let meat marinate in the fridge overnight or at least 4 hours.
Remove the meat from the fridge 30 minutes before cooking, you want to start the meat at room temperature.
Preheat oven to 400 degrees Fahrenheit.Heat a large 12-inch cast-iron skillet on medium-high heat. Drizzle 2 tbsp of avocado oil in the pan, once the oil shimmers place tri tip in the pan fat side down.
Sear the roast for 3-4 minutes until nice and chared. Flip and sear the other side. Put roast in the oven and bake for 30 minutes. OR about 10-12 minutes per pound, depending on you like your meat cooked. More rare meat will read 130-135 degrees and medium rare is 135-145 degrees F. You can cook it past this point if you like well-done meat. Use a meat thermometer inserted in the center of the roast to check the temperature.
Remove from oven and cover with foil, let meat rest at least 10 minutes before slicing.
Slice against the grain, and serve hot, enjoy!
