I make these all the time and we really love them:
1 lb ground beef
l/2 large onion - chopped
1 small can green chilis
Salsa from a jar - mild, medium or hot whichever you like
Shredded cheese - I use combo of cheddar and colby
Burrito size tortillas
Brown the ground beef and onion, pour off any accumulated fat. Then add the green chilis, as much salsa as needed to make like thick mixture. Simmer together for a few minutes.
Heat burritos in wet paper towel in the microwave for about 15 seconds.
Fill burrito with the meat mixture, shredded cheese and the sour cream. Roll up and enjoy. They can be messy but are really good and fast to.