Add the bok choy, cut side down. Season with salt and pepper. Cook for 3-4 minutes until tender. Sprinkle with sesame seeds before removing from heat.
Cook the Steak: In a separate skillet over medium-high heat, add the thinly sliced flank steak. Sear for 2-3 minutes per side until browned.
In a small bowl, whisk together soy sauce, ginger powder, garlic, honey, and water. Pour the mixture into the skillet with the steak.
Simmer for 2-3 minutes, stirring occasionally, until the sauce thickens and coats the steak.
Serve the bok choy alongside the steak or mix everything together. Garnish with sliced green onions.
Notes
Leftovers: Store in an airtight container in the refrigerator for up to 5 days.
More Carbs: Serve over rice or other grain. You can also add additional veggies.