This is how bakeries use up yesterday's croissants — a slightly dry croissant soaks up the syrup better.
Bring the water to the boil with the sugar, boil for 1 minute, take off the heat and stir in the rum or almond extract.
Make the almond cream (crème d'amande): beat the soft butter with the sugar until fluffy, add the egg, then the ground almonds, and mix into a smooth cream.
Preheat the oven to 180 °C. Split the croissants lengthways from the side (keeping the back joined) and brush the cut surfaces generously with the syrup.
Divide two-thirds of the cream between the insides of the croissants, close them, spread the rest of the cream thinly over the tops and sprinkle with the flaked almonds.
Bake on a tray lined with baking paper for 15-18 minutes until the almonds are golden and the cream has set. Once cool, dust with icing sugar.
A Receptnaptár original recipe. Calories and protein are estimated.