Make the sauce:In a small bowl, whisk together the coconut aminos, 3 Tbsp water, and raw honey. Set aside.
Prep the thickener:In another small bowl, mix the tapioca starch with the remaining 3 Tbsp of water to form a slurry. Set aside.
Sear the beef:Heat coconut oil in a large cast iron skillet or wok over medium-high heat. Add the flank steak strips and stir-fry for about 2–3 minutes, until just cooked through and no longer pink. Remove from the pan and set aside.
Sauté the veggies:In the same skillet, add bell peppers, red onion, garlic, and ginger. Cook for 4–5 minutes, stirring frequently, until just tender but still crisp.
Bring it all together:Push the veggies to the edges of the pan and pour the coconut aminos sauce into the center. Let it bubble for 30 seconds, then slowly stir in the tapioca slurry, mixing continuously until the sauce thickens and becomes glossy.
Finish it off:Return the cooked beef to the skillet and toss everything together until well-coated in the sauce and heated through — about 1–2 more minutes.
Serve & enjoy:Spoon over steamed rice, cauliflower rice, or noodles of choice. Garnish with green onions, sesame seeds, or a squeeze of lime for an extra pop of flavor!