Dice steak into 1 inch cubes, place in small bowl with cornstarch and toss to coat.  Let sit at room temperature 15 minutes.  While waiting, this is a good time to work on other meal prep recipes or prepare the carrots and broccoli.

Heat sesame oil in large wok or pan over medium high heat. Oil is ready when a drop of water sizzles when added to the pan.

Add steak and cook for 4-6 minutes or until desired doneness, stirring occasionally.

Add soy sauce and bring to a boil, then reduce heat to low and simmer 5 minutes or until sauce is thickened.

Remove from heat, stir in veggies.

To Freeze: Place stir fry in storage container or baggie and let cool in fridge, then lay flat in freezer.

To Serve: Thaw stir fry overnight, prepare rice or noodles according to package instructions. Heat stir fry in skillet over medium heat or in microwave until warmed through. Garnish with optional toppings.