What can you use to substitute baking powder in chocolate ship cookies?

You can't directly substitute baking powder in chocolate chip cookies with just one ingredient. Baking powder is a leavening agent that creates the airy texture in cookies. Here are some options, depending on what you have on hand:

For a similar texture:

* Baking soda and an acid: Combine 1/4 teaspoon of baking soda with 1/2 teaspoon of cream of tartar for every 1 teaspoon of baking powder. This will create a similar leavening effect.

* Self-rising flour: You can replace 1 teaspoon of baking powder with 1 1/4 cups of self-rising flour.

For a slightly denser cookie:

* No substitution: You can omit the baking powder altogether. This will create a denser, chewier cookie. Just keep in mind that the texture will be different.

Important Notes:

* Always check the recipe carefully: Some recipes are specifically designed to use baking powder and may not work well with other substitutes.

* Adjust for sweetness: Baking powder sometimes adds a slight sweetness to baked goods. If you're omitting it, you may need to adjust the sugar in your recipe.

Let me know if you want more information on these options or have any other questions about baking!