What would happen if you made peanut butter cookies without baking soda or powder?

Without baking soda or baking powder, your peanut butter cookies would be dense and flat instead of light and fluffy. This is because baking soda and baking powder are chemical leavening agents that help baked goods rise. When these ingredients are added to a batter or dough, they react with acids to produce carbon dioxide gas. This gas creates bubbles in the dough, which expand during baking and cause the baked goods to rise.

Without baking soda or baking powder, your peanut butter cookies would not have these bubbles, and they would therefore be flatter and denser. They would also likely be more crumbly, as the lack of rising agents would make them more fragile.

If you don't have any baking soda or baking powder on hand, you can make your cookies rise by using another leavening agent, such as cream of tartar or yeast. However, the best results will be achieved by using baking soda or baking powder.