I first made San Francisco Joe’s Special, a skillet dish of ground beef, spinach and eggs 11 years ago! And I’ve made it many times since. I have used frozen spinach but usually use fresh, and usually when I’ve bought the big bag of spinach at Costco.
I’ve varied the seasonings a bit, lately adding Worcestershire rather than just salt. Some people skip the Parmesan cheese on top but I like it.0