I found a  great blog post this morning and thought you guys might enjoy it.

I advocate eating a whole foods, plant-based diet, and I don't recommend adding in any oils.  Oils are very concentrated processed foods.  They are 4000 calories/pound, and add nothing in the way of nutrients.  They are hidden source of calories, and often I find when someone thinks they are eating very low calorie food, when we look at their journal, their good efforts are undone by added oils.

Here are is a link for how to cook without oils.