Nothing adds calories to your meal faster than cooking oil. Even olive oil which has many healthy properties has 120 calories per tablespoon. It would be nice if we could use no oil at all when we saute veggies or meat, but that doesn't always work very well.
In some recipes, you can cook with chicken stock instead of oil. With just a tablespoon or two, it's easy to cook onions, garlic, and other veggies and you'll add less than 5 calories to the meal.
COMMENT: Never thought of this. I always have chicken broth on hand to use in my sauces, soups, etc. but never thought of trying to saute veggies with it instead of oil. I'll give this one a try. Should add some good flavor too. Also bet it will work with beef broth.