Can sweet and low be used instead of sugar in baking?

Yes and No.

Sweet'n'low is an artificial sweetener and does not bake in the same way that regular sugar does. So, if you substitute it in a regular recipe, your baking may not turn out.

However, if you look at the sweet'n'low website (http://www.sweetnlow.com/recipes.html), there are recipes that have been listed that should work with that product.