Preheat the oven to 170 degrees celsius and line a baking tray with baking paper.
Using a serrated knife, slice the croissants in half. Then dip into the cooled sugar syrup so they are completely coated. Let any excess syrup drip off and place onto the prepared tray.
Fill a piping bag with 3/4 of the almond filling (or you can use a spoon) , open up the croissants and pipe the almond filling into the middle of the pastries, topping with 4 raspberries and then closing the croissants up.
Use the remaining filling, pipe a small amount of the almond filling on top of the croissants.
Sprinkle the croissants with flaked almonds and two raspberries.
Place in the oven and bake for 15-18 minutes until the filling is starting to brown.
Remove from the oven and leave to cool slightly before eating!