From my mom in law I learned to use a piece of paper towel to grease a baking pan with margarine.
Sometimes I try to multitask: Cooking and Facebook. The result: Food scorched at the bottom of the pot. A great way for an effortless clean-up is to sprinkle a teaspoon of dish washer detergent at the bottom of the pot and add boiling water. Just wait and see. The burned bottom will loosen up.