Pepper steak consists of sliced beef steak(often flank, sirloin or round ) cooked with sliced onions, green/red bell pepper and other seasonings such as soy sauce, ginger and usually thickened with cornstarch. Bean sprouts are frequent additions to this recipe. It is served with mashed potatoes. I also went ahead and made some sides of green beans and steamed broccoli to make it a heartier meal.