Meanwhile, add the olive oil to a large skillet over medium-high heat.
1 tablespoon olive oil
When the oil is hot, add the beef and cook it until it's browned on the outside, about 2 minutes.
1 pound flank steak
Remove from the pan, leaving any juices behind. Set aside.
To the same pan, add the onions and stir fry for 3 minutes, until beginning to soften.
1 medium onion
Add the ginger and garlic and cook for 2 more minutes.
1 tablespoon fresh ginger, 4 garlic cloves
Meanwhile, mix the stir fry sauce ingredients together in a bowl. It doesn't have to be completely smooth.
1/2 cup Low Sodium Soy Sauce, 2 tablespoons honey, 1.5 teaspoons sesame oil, 2 teaspoons Chinese 5 spice powder, 1.5 tablespoons fresh lemon juice, 1/2 cup water
Pour the sauce over the onions, garlic, and ginger, and let it simmer for 5 minutes.
Sprinkle the starch over the pan in a light layer and mix quickly with your wooden spoon.
1.5 tablespoons Tapioca starch
Add the beef, broccoli, and a pinch of crushed red pepper flakes to the skillet, and stir everything together.
Season to taste, and serve garnished with green onions and toasted sesame seeds.