The easiest, flakiest croissants you'll ever make with marzipan in every bite!
Preheat oven to 175°C. Line a baking sheet with parchment paper.
In a bowl, mix together marzipan, ground almonds, icing sugar, and Amaretto or milk until smooth. You may need an additional tablespoon of milk if the mixture is hard to incorporate.
Roll out the croissant dough and cut out 5 triangles. Spread the marzipan mixture evenly on the triangles. Roll them toward the narrow end. Place the croissants on the prepared baking sheet and brush each with the egg wash. Sprinkle sliced almonds on top.
Bake for 15-20 minutes, until the croissants are golden brown. Dust with icing sugar before serving.
They are best eaten right away.
If you don't want to use an egg to brush the croissants, you can alternatively brush them with milk.