That depends on what you're making. If you're baking, I wouldn't risk a substitution. Baking is very precise, there is a delicate balance of ingredients in order to achieve the desired chemical processes and the right result. If you need a substitute for butter in a COOKING recipe, say for a sauce, or to pan fry vegetables, that's different. You could probably substitute margarine, Smart Balance, or a light and tasteless oil.
It really depends on what you are making. In some cakes, yes you can sub out butter for oil. I would suggest using a light olive oil, because it's the only oil that contains emulsifiers which will give you a nice tender cake. Usually it's 3 parts oil to 4 parts butter (so...3/4 cup of oil in a recipe that calls for 1 cup of butter)
Most people say you will get a denser cake with oil, but honestly, I have a Lemon cake I make with whole wheat flour, yogurt, eggs, EVOO and sugar, baking powder, and it's got a wonderful light texture.
I'm not sure about cookies - You may want to Google some vegan cookie recipes and give them a try. The butter gives cookies that crisp edge, and solid shortening gives them a wonderful tender texture. In cookies, you could probably sub out butter flavored Crisco for butter. You could also use applesauce, but the cookie may be more cake like if you do.
You could substitute margarine for butter and yogurt for sour cream.
Yogurt is not a good substitute for butter in any recipe; yogurt is lower in fat, higher in liquid and far more acidic than butter. These qualities make it very different to butter, hence it's not a good substitute.
Both are correct, you can say substitute for or substitute with.
graham crackers and peanut butter.
baby oil or melted butter (:
How much oil will substitute for 8 cups of butter
Yes, you can substitute margarine for butter in no bake cookies.
This question already has a very good answerCan_you_substitute_vegetable_oil_for_butter_in_a_cake_recipe
yes there is butter of margine butter
Pure olive oil is a good substitute for cooking with butter.
use butter flavored crisco You could use margarine. http://www.ukfoodies.co.uk has a delicious cookie recipe, this recipe has butter, but you could substitute it with margarine.
B Graham crackers with peanut butter