Add the onion and sweet pepper and fry, stirring regularly, until softened. Add the remaining steak ingredients and continue to fry for 4-5 minutes, stirring regularly, until the vegetables are ...
Mary Berry bashes the steak for her beef stir-fry before cooking ... Season the marinated steaks with salt and pepper and fry for 1½–2 minutes on each side, then transfer to a warmed plate ...
Transfer to bowl with steak. In same skillet over medium heat, heat remaining 1 Tbsp. oil. Add onion and bell peppers; season with salt. Cook, stirring frequently, until peppers are softened ...