You can use honey in cooking instead of sugar. Because it is sweeter than sugar, you need to use less. The first thing to consider when using honey to cook with is that it is judged to be twice (2 X) as sweet as sugar. Therefore, to get the same sweetness as sugar, you use one half as much as you would of sugar.
Honey is about 18% water. If you round that off to 20% you can easily figure that about 1/5th of the honey you add to your recipe is water. Therefore, you cut back on the moisture in your recipe by 20% (1/5th).
Honey is hygroscopic (meaning it attracts water) so it is good for baking cakes as it keeps them moist for longer.