In general, you can substitute shortening for butter in equal amounts in baking recipes (not the frosting or icing, though—yuck). Shortening yields higher, lighter-textured baked goods, which is sometimes preferable to butter (depending on what you're making).
In respect to this, how bad is Crisco for you?
Because of this solidifying process, margarine usually contains some trans-fatty acids, no matter what the label says. These are bad kinds of fatty acids that can promote inflammation in the body". Crisco is worse. You can spray it.
Why shortening is bad for you?
Even more dangerous is the 1.7 grams of trans fat the tablespoon of vegetable shortening contains. Aim to completely eliminate trans fats from your diet because they raise bad cholesterol levels, lower good cholesterol levels and increase your risk of heart disease, reports the Harvard School of Public Health.
Is shortening good for you?
A tablespoon of vegetable shortening contains 12.8 grams of fat, but about 9 grams of that is in the form of unsaturated fats. According to the Harvard School of Public Health, unsaturated fats are good for your heart because they help lower cholesterol levels and reduce your risk of heart disease.