MAKE THE SIMPLE SYRUP
To a pot over medium heat, add the water, sugar, and almond extract. Bring to a boil so all the sugar is dissolved and then reduce the heat to low and simmer for 10 minutes. Transfer to a bowl and allow to cool to room temperature so it thickens up.
PREPARE THE ALMOND FILLING
To a bowl, add the almond flour, sugar, salt, unsalted butter, vanilla extract, almond extract, eggs, and heavy cream.
Beat together until light and fluffy using a stand or hand mixer.
ASSEMBLE AND BAKE
Preheat oven to 350°F.
Place slices of brioche on a baking tray lined with parchment paper.
Brush each slice of brioche with simple syrup.
Add a generous amount of the almond paste to each brioche and spread on an even thick layer. Sprinkle with the sliced almonds and repeat with the rest of the brioche.
Bake in the oven for 15 to 20 minutes until the edges are golden.
Allow them to cool for 5 to 10 minutes and then dust them with powdered sugar to enjoy warm!