Preheat oven to 200°F

In mixing bowl, mix ground beef, eggs, chili sauce, and breadcrumbs

Divide mixture into 8 portions

Form portions into patties

Heat oil in skillet on medium heat

Brown patties in preheated skillet for 5 minutes per side

Place patties on baking sheet

Put baking sheet into preheated oven

Keep patties warm in the oven

Add beef broth and cornstarch to skillet

Add water and stir the mixture until the cornstarch is dissolved

Set heat on high and cook until the mixture thickens, stirring frequently

Stir in mushrooms

Spoon gravy over patties

Serve