In a heavy pot, brown hamburger; drain grease.

Add the remainder of the ingredients except for the parsley.

Simmer for about an hour; add the parsley and simmer for 10 minutes more.

Ladle into individual bowls and serve.

Or top with shredded cheese (Jack, Cheddar, or crumbled Cotija), a dollop of sour cream, and sliced green onions if desired.

Some people like to serve this over cooked rice.