Hamburger Steaks

Name: Hamburger Steaks
Prep time: 10 min
Total time: 10 min
Cuisine: American
Ingredients: 1 lb. ground beef; 1 large egg; 3 tbsp. plain breadcrumbs; 1 tsp. garlic powder; 1 tsp. onion powder; 1/2 tsp. paprika; Kosher salt; Freshly ground black pepper; 2 tbsp. extra-virgin olive oil; 2 tbsp. unsalted butter; 8 oz. baby bella mushrooms, rinsed, sliced; 1 small yellow onion, thinly sliced; 2 tbsp. all-purpose flour; 1 1/2 c. low-sodium beef broth; 1 tsp. Worcestershire sauce; 1 tsp. fresh thyme leaves