Mongolian beef is a dish usually served in Chinese-American restaurants consisting of sliced beef, typically a flank or flat-iron steak, and stir-fried with vegetables (usually green onions) in a savory brown sauce, usually made with soy sauce, and chili peppers. Servings 4 Ingredients Mongolian Beef Ingredients: 2 t vegetable oil ½ t. minced ginger 1