Can substitute granulated sugar for powdered in key lime pie?

You can substitute granulated sugar for powdered sugar in a key lime pie, but it will change the texture and sweetness of the filling. Here's why:

* Texture: Powdered sugar dissolves more easily than granulated sugar, creating a smoother, silkier filling. Granulated sugar will leave a slightly grainy texture.

* Sweetness: Powdered sugar is about twice as sweet as granulated sugar. You'll need to adjust the amount used to achieve the same level of sweetness.

Here's how to adjust the recipe:

1. Reduce the amount of granulated sugar. Start by using about half the amount of granulated sugar called for in the recipe.

2. Taste and adjust. Once the filling is cooked, taste it and add more granulated sugar if needed, a tablespoon at a time, until you reach the desired sweetness.

3. Consider adding cornstarch. To help thicken the filling and give it a smoother texture, you can add a small amount of cornstarch (about 1 tablespoon per cup of granulated sugar) to the mixture.

Ultimately, using granulated sugar will result in a slightly different key lime pie, but it can still be delicious!

Note: If you're concerned about the texture, you can always use a food processor to finely grind the granulated sugar to resemble powdered sugar.