Pre-heat oven to 3500 F.
Place chorizo in a food processor until coarsely chopped.
Transfer to a bowl and mix with beef, ¾ cup tomato sauce, bread crumbs, egg, onion, Worcestershire sauce, thyme, garlic, salt and pepper.
Place the mixture into a 10 x 4 inch loaf pan.
In another bowl, combine brown sugar, mustard and the remaining tomato sauce. Mix well.
Using a pastry brush, brush the mixture on the surface of the meat loaf.
Bake for 45 minutes.
Happy cooking, Foodies!