Slice the flank steak against the grain into very thin strips and season with sea salt and black pepper.
Mince the garlic cloves and finely grate the fresh ginger.
In a small bowl, whisk together the coconut aminos, honey, minced garlic, and grated ginger to create the stir-fry sauce.
Heat a large skillet or wok over medium-high heat and add the sesame oil once the pan is hot.
Add the beef strips to the pan in a single layer and sear until browned and caramelized, approximately 2-3 minutes, then remove the beef and set aside.
Add the broccoli florets and sliced red bell pepper to the same pan with two tablespoons of water; cover with a lid for 2 minutes to steam until tender-crisp.
Remove the lid, 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 slightly and coats the beef and vegetables thoroughly.
Transfer to a plate and garnish with toasted sesame seeds before serving hot.