Bake at 450°F (preheat, please) for 10 to 15 minutes, or until golden brown. They will be soft at first and become harder around the edges as they cool.
Here are some Danish pastries (cherry turnovers, really) fresh from the oven.
They taste best if you let them cool to lukewarm or at room temperature.
If you make them the night before, cover them with a clean towel and they should be fine in the morning. If you like you can reheat for a few minutes in the oven or a few seconds in the microwave.
Freeze them and serve them later, too. This is a great idea for a small household (save for Sunday treats) or for a complex party. They would make great bake sale items, too.