Next, in the same skillet you cooked the beef in, toss in your chopped onion and sauté them for about 4-5 minutes, or until they soften and become translucent. The little bit of leftover beef flavor in the skillet will make the onions taste even better. Then, add your sliced potatoes to the skillet with the onions and cook for another 5 minutes. Season with a pinch of salt, pepper, and garlic powder to make sure everything has flavor.