Combine ground beef, bread crumbs, garlic, egg, seasoned salt, and Worcestershire sauce in a large bowl using your hands. Form into 4 uniform sized patties; set aside.
Heat olive oil in a 12 inch nonstick skillet over medium high heat until shimmering. Add mushrooms, onion, and bell peppers; season with salt and pepper. Cook and stir vegetables until onion just beginning to soften, 4 to 5 minutes; transfer to a bowl and keep warm.
Add patties to same skillet; cook until browned, about 3 minutes per side. Return vegetables to skillet on top and around patties; pour in beef broth. Reduce heat to medium; cook until an instant read thermometer inserted into centers of patties reads 160 degrees F (71 degrees C), 4 to 5 minutes more.
Divide patties and vegetables among serving plates. Meanwhile, boil and reduce liquid in skillet to about 1/2 cup; divide and drizzle over patties and vegetables. Serve warm.
Hamburger Steaks with Peppers, Onions, and Mushrooms · Dinner Match Lab | Dinner Match Lab