The same amount of butter as oil. You may have to melt it if it was a fluid measurement.
You should use the same amount of butter. It's probably also best to melt the butter so that it combines well.
No. Olive oil has a distinct flavor. If you need to substitute butter you should use margerine or shortening
Generally when baking unsalted butter is used unless the recipie calls for salted.
Crisco was initially, and still is, used as an alternative to regular shortenings such as butter and lard. A recipe calling for Crisco in baking should respond perfectly well to the use of identical quantities of butter, which will also give an excellent flavour.
Butter is not a substitute for butter extract. Butter extract is a fat-free flavoring used when for some reason butter cannot be used. When butter is used, it should replace the fat in the recipe - shortening, oil or lard - and the butter extract will not be needed.
If you like it soft, then don't, if you like it hard, then do.
Baking soda or crushed aspirin
The proportion of sugar to butter in baking depends on what you are baking and on the individual recipe. There is no universal proportion guide you can follow to cover all types of baking and all recipes. As a general rule with baking, the first time you cook something follow the recipe precisely unless you are very sure of the outcome if you change it. When you find that recipe works successfully you can tweak it around to suit yourself, within the basic guidelines.
When recipe instructions say to "cream" butter and sugar, it means to mix the butter and sugar together with an electric beater until they are well combined. You should no longer be able to see any sugar crystals separate from the butter, and the butter should lighten in color. For delicate cookies or cakes, the butter and sugar should be beaten until you can rub a bit between your thumb and forefinger without feeling any grains of sugar.
Yes you can it is healthier but remember it can burn easily you should warm it on low or add it in the cake mix
No, making this substitution is not advisable. Lard will give your cookies a strange flavour and texture.
You should try to use baking powder instead of baking soda, if that's not the problem try using about 2/3 cup of oil instead of 1 stick of margerine or butter or chill your dough for about 2 hours before you bake the cookies. you could also use more butter.