30-Minute Mongolian Beef

Name: 30-Minute Mongolian Beef
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: Asian
Ingredients: 1½ pound 1-inch thick sirloin steak; 1/3 cup cornstarch; ¼ cup canola oil; ¼ teaspoon salt; 1 tablespoon fresh grated ginger; 4 tablespoon garlic, minced; Red pepper flakes or chili oil; 1/3 cup reduced sodium tamari sauce (for gluten-free), or soy sauce if you prefer; ½ cup water; 1/3 cup brown sugar; 8 stalks scallions, green parts only, cut into 2 inch pieces