Will eating sugar-free cookies or xylitol cookies make you fat?
Because there is starch in it, starch will eventually become sugar, which will be broken down into a small part of sugar by salivary enzymes in the mouth.
But the right amount won't be a big problem.
What's more, whatever you eat will make you fat. What else do you eat? But if you balance food and consumption, you won't gain much weight.