How many more minutes to cook a quiche when using 9 inch pan instead of 10 pan?

You can't determine how many more minutes to cook a quiche based solely on the pan size. Here's why:

* Quiche Filling Depth: The cooking time is primarily determined by the depth of the filling, not just the pan diameter. A 9-inch pan with a deep filling might take longer than a 10-inch pan with a shallow filling.

* Oven Temperature: The oven temperature also significantly impacts cooking time. A hotter oven will cook the quiche faster, regardless of the pan size.

* Crust Thickness: A thicker crust will take longer to cook than a thinner one.

* Filling Ingredients: Different ingredients cook at different rates. A quiche with mostly cheese might cook faster than one with lots of vegetables.

How to Determine Cooking Time:

1. Follow Recipe Instructions: Always start with the recipe's recommended cooking time. It's designed for the specific ingredients and proportions.

2. Check for Doneness: Use a toothpick or knife to check for doneness. It should come out clean or with just a few moist crumbs attached.

3. Adjust as Needed: If the crust seems to be browning too quickly, you can cover the edges with foil. If the filling isn't set, you might need to add a few more minutes of baking time.

Remember, it's better to err on the side of undercooking than overcooking a quiche!