15-Minute Pepper Steak Stir-Fry

Name: 15-Minute Pepper Steak Stir-Fry
Cuisine: Asian
Ingredients: 8 oz (225g) flank steak, thinly sliced against the grain; 2 tablespoons olive oil, divided; 1 red bell pepper, cut into 1-inch cubes; 1 green bell pepper, cut into 1-inch cubes; 3 garlic cloves, minced; 1/4 cup brown sugar; 1/2 cup low sodium soy sauce; 2 teaspoon sesame oil; 1 teaspoon ground ginger; 1 tablespoon Sriracha (or your favorite hot sauce); 1 tablespoon cornstarch