Brown the ground beef and chopped onion in a medium to large saute pan, seasoning with garlic salt, pepper, onion powder, and nutmeg. Break the beef apart as it cooks.

Add the diced garlic to the pan during the last minute of cooking with the beef and onion.

Pour in the beef broth and orzo, then reduce the heat to medium-low.

Continue cooking and stirring frequently until the orzo is tender, ensuring it doesn't stick to the pan.

Remove the pan from the heat and stir in the sour cream, then serve hot.