Prep your beef flank by thinly slicing it into ¼” strips.
Chop the broccoli into smaller pieces, keep both the stem and broccoli floret chunks.
In a bowl add in your chopped beef.
Combine minced garlic, chopped ginger, water and cornstarch combined, brown sugar, sesame oil, and low sodium soy sauce.
Once you have all of the ingredients combined
In a saucepan on medium-high add in your butter. After the butter has melt down add in about 1 tbsp of the beef sauce you created along with the beef.
Once the beef begins to get brown on one side add in the rest of your sauce
Once the beef is cooked add your broccoli to the pan. If you aren’t sure if your beef is done you can use a meat thermometer. A safe temperature to eat beef is 145 degrees.
Place the top on and allow to simmer until done.
Sprinkle your roasted sesame seeds
Lastly, plate the beef and broccoli over rice or noodles and garnish with sesame seeds.