Lay puff pastry sheet out on a flat surface.

In a bowl, combine cheddar cheese and chorizo sausage.

Evenly spread the cheddar/chorizo mixture over the puff pastry sheet.

Tightly roll up the puff pastry into a log.

Place the rolled puff pastry in the freezer for at least 10 minutes.

Remove from the freezer and let it soften slightly for easier slicing.

Using a serrated knife, carefully cut the rolled pastry into 8 even slices.

Preheat the oven to 350 degrees.

Brush each slice with melted butter.

Arrange the slices on a baking sheet.

Bake for 20 minutes, or until golden brown.