Salted butter has 36 calories for each 5-gram serving.
The calories should pile up, depending on the thickness of the butter or margarine that you'll spread on the bread.
The great thing is, you don't have to relegate butter to a spread.
Toss out the I Can't Believe It's Not Butter and start using the real thing in your day to day cooking when you don't want to be as slender as you are.
Go all out, even, and try Julia Childs' roast chicken!
Eating butter increases the absorption of many other nutrients in other foods.