Anyone know how to roast chestnuts?

My dad got some for Christmas but the directions on the carton are all blurry. It looks like it says something abut cutting an X on the top and cooking them, but at what temp? How long? On what? A cookie sheet?

Anyone know how to roast chestnuts?
Things You'll Need

Chestnuts

Salt

Baking Sheets

Paring Knives

Steps

1Step OnePreheat the oven to 425 degrees F.

2Step TwoClean off chestnuts.

3Step ThreeUse a sharp paring knife to cut an X into one side of each chestnut, or prick chestnuts with a fork to allow steam to escape.

4Step FourArrange chestnuts on a baking sheet or in a shallow pan, with the cut or pricked sides up.

5Step FiveRoast in oven for 15 to 25 minutes, or until chestnuts are tender and easy to peel.

6Step SixPeel the nuts when they are cool enough to handle, and enjoy.

Tips %26amp; Warnings

Use dry, firm chestnuts; soft chestnuts might be rotted.

Try a little salt on your chestnuts.

Be sure to remove the inner skins as well as the shells.

Chestnuts that have not been cut or pricked to allow steam to escape may explode, even after being removed from the heat.
Reply:on a open fire
Reply:Spread them in a thin layer on a cookie sheet and bake at 350 F. They will take about 6 to 10 min. Stand there and watch them. They burn very easily.
Reply:yes, place by an open fire (as in the song).