Using a serrated knife, slice the steak against the grain at an angle. Slice as thin as possible!!
Add sliced steak to a bowl and add arrowroot starch. Toss to combine until the steak is fully coated.
Heat a large skillet over medium heat. Once hot, add ~2 oil to the pan. Add carrots and bell pepper and cover with a lid to steam for 3-5 minutes. Once tender, remove from pan and set aside.
Add remaining ~2 tbsp oil to the pan. Once hot, add the beef and cook on medium-high heat. Be careful not to overcook and turn the heat down when there's barely any pink left.
Add the cooked veggies, green onions and sauce into the pan. Stir until well combined, then reduce heat and cover with a lid. Let cook for 4-5 minutes or until the sauce has thickened.
Remove from heat and add sesame seeds to serve. Pair with rice and enjoy!
