Heat olive oil in a large skillet over medium-high heat. Season steak with salt and pepper and add to skillet. Cook for 2-3 minutes, or until browned on the outside then use a slotted spoon to remove from the skillet and set aside on a plate.

Add peppers to the same skillet and cook for 3-4 minutes, or until tender. Add garlic and ginger then cook for an additional minute. Return cooked steak to the skillet and mix to combine.

In a small bowl, whisk together soy sauce, water, rice vinegar, brown sugar and cornstarch then pour into the skillet.

Cook for 1-2 minutes, stirring continuously, until thickened. Remove from heat and sprinkle sesame seeds on top for garnish. Serve over rice, if desired.

*Rice not included in nutrition information.