Place a large skillet (preferably with high sides) over medium heat with 1 tbsp of sesame oil. Add the slices of beef in a single layer and sauté for 5 minutes or until cooked through. Remove the beef strips from the pan and set aside.
Add another 1 tbsp of sesame oil to the same skillet and add the broccoli florets and 2 tablespoons water. Cover the skillet with a lid and allow to cook/steam for 3-5 minutes.
Meanwhile, in a separate bowl. Combine the remaining ingredients and whisk well to make a sauce.
Add the beef strips back into the skillet with the broccoli along with the sauce. Reduce heat and simmer for 2-3 minutes.
Serve with rice of choice and top with sesame seeds.
Notes
See the post for tips and ingredient substitutions.