Tonight will be my 3rd time making this recipe. It’s so good, and the sauce is to die for

Ingredients:

For the Patties:

1 1/2 pounds ground beef

1 egg

1/4 cup minced onion

1/4 cup breadcrumbs

1 clove garlic, crushed

1/2 teaspoon salt

1/4 teaspoon pepper

For the Gravy:

1 small onion, sliced

6 ounces mushrooms, sliced

1 1/2 cups beef broth

1 package brown gravy mix

1 tablespoon ketchup (optional)

1 tablespoon Dijon mustard (optional)

2 tablespoons cornstarch