Slice the flank steak against the grain into thin strips and season with sea salt and black pepper.
In a small bowl, whisk together the tamari, toasted sesame oil, raw honey, minced ginger, minced garlic, and arrowroot powder to create the stir-fry sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the beef strips to the hot pan in a single layer and sear for 2-3 minutes until browned and caramelized, then remove from the pan and set aside.
Add the broccoli florets to the same pan with a splash of water, cover, and steam for 2 minutes until vibrant green and tender-crisp.
Return the beef to the pan and pour the prepared sauce over the mixture.
Toss everything together for 1-2 minutes until the sauce thickens and coats the beef and broccoli beautifully.