Gently unroll your store-bought croissants on a lightly floured surface or a baking sheet lined with parchment paper.

Take a spoonful of your delicious orange marmalade (about 1-2 tablespoons per croissant) and carefully spread it over the wider end of each croissant triangle.

If you're using orange zest, now's the time to mix it into your remaining marmalade.

Starting from the wide end, gently roll each croissant towards the pointed end.

If you want that beautiful golden sheen, lightly brush the top of each rolled croissant with the beaten egg.

Bake the croissants according to the package directions for the ready-to-bake croissants you purchased. Usually, this is around 12-15 minutes at 375°F (190°C), but it can vary.

Once they're out of the oven, let the croissants cool slightly on a wire rack. While they're still warm, you can dust them with a bit of powdered sugar, if desired.