Is it important to add baking soda or powder peanut butter cookies?

Adding baking soda or powder to peanut butter cookies is optional, but it does have a noticeable effect:

Baking Soda:

* Makes the cookies more spread out and thin. This is because baking soda reacts with the acidic ingredients in the cookie dough, creating carbon dioxide gas bubbles that cause the dough to rise and expand.

* Adds a slightly tangy flavor. This is due to the chemical reaction of baking soda.

* Requires a longer baking time. The extra rise from the baking soda means the cookies will take longer to cook through.

Baking Powder:

* Creates a slightly chewier texture. Baking powder contains both baking soda and an acid, which react together to create a slightly chewier texture.

* Results in a less pronounced spread. Baking powder is less powerful than baking soda, so the cookies won't spread as much.

* Produces a slightly more airy texture. The reaction of baking powder creates more air bubbles in the cookie dough, leading to a lighter, airier texture.

Which to Use:

* If you want chewy cookies that don't spread much, use baking powder.

* If you want thin, crispy cookies that spread a lot, use baking soda.

Without Baking Soda or Powder:

* Cookies will be dense and chewy.

* They will not spread much.

Ultimately, the choice of adding baking soda or powder is a matter of personal preference. Experiment and see what you like best!