Cut the beef into bite-sized pieces.
Cut the onion, bell pepper, and paprika into easy-to-eat pieces.
Heat cooking oil in a pan and sear the beef over high heat.
When the beef is halfway cooked, add the chopped vegetables and stir-fry.
Season with salt and pepper.
Add steak sauce and stir well with the ingredients.
When the vegetables are slightly cooked, turn off the heat and serve on a plate.