Heating pan before cooking || The inexperienced or hurried cook will barely heat the pan before adding oil and tossing in onions for a sauté. Next comes...nothing. No sizzle. A hot pan is essential for sautéing veggies or creating a great crust on meat, fish, and poultry. It also helps prevent food from sticking.
Freeze green onions in water bottles - shake out the right amount and return to the freezer! Handy Tip - I always end up buying so many green onions and recipes never call for more than 3 stalks :P (Make sure the onions are dry before going in the freezer to prevent the freezer burn)