Weighing the beef and forming uniform patties ensures even cooking. Once ingredients are prepped, heat a large skillet over medium-high heat.
Season the hamburger steaks on both sides using a teaspoon of salt, a teaspoon of pepper along with the garlic powder, onion powder, and chili powder.
Cook the hamburger steaks in a single layer, not over-crowding. Place the ground beef patties into the hot skillet, reduce heat to medium and cook until the browning reaches half way up the bottom of the patty (about 4 minutes).
Carefully flip the hamburger steaks and cook about 4 minutes on the other side until cooked through. Transfer the hamburger patties to a plate and set aside.
Next, remove the excess oil from the pan leaving about 2 tablespoons, then add the sliced bell peppers, sliced onions, and mushrooms. Season the vegetables with the remaining salt and pepper and sauté until tender, about 10 minutes. As the juices release from the vegetables, gently scrape the bottom of your pan to release the brown bits to add more flavor to the vegetables.
Next, transfer the vegetables to a plate or push aside and return the hamburger steaks to the hot skillet to warm through, 1 to 2 minutes.
Serve the hamburger steaks smothered in the peppers, onions and mushrooms along with your favorite sides (see post for suggestions)