Ingredients
Hamburger Steak
1 ½ lbs ground beef see notes
1 large egg
¼ cup bread crumbs
¼ cup onion finely minced
½ teaspoon garlic powder
½ teaspoon kosher salt
¼ teaspoon freshly ground black pepper
2 teaspoons yellow mustard
2 teaspoons Worcestershire sauce
Hamburger Gravy
2 tablespoons olive oil
2 tablespoons unsalted butter
8 ounces sliced baby bella mushrooms
2 small yellow onions thinly sliced
2 tablespoons all-purpose flour
1 cup low-sodium beef broth
1 10.5-ounce can French Onion Soup
Salt and freshly ground black pepper to taste
Chopped fresh thyme or parsley
