Remove the frangipane from the fridge and set beside the cookie dough. Then, layer a baking tray with parchment paper and set aside.
Use a 2 Tablespoon cookie dough to scoop out 12 evenly sized cookie dough balls.
Flatten each cookie dough ball into a disc and place 1 teaspoon of the chilled almond frangipane in the center of each cookie.
Fold the edges of the dough over the filling, pinching and sealing the edges completely. Then, roll them into balls between your palms.
Add the cookie dough balls to the parchment-lined baking tray so that they are spaced about 2 inches apart.
Next, top each cookie dough ball with an additional 1 teaspoon of the frangipane filling. Then, press sliced almonds on top of the frangipane. Start with ¼ cup sliced almonds and add more if desired.
Add the tray of cookies to the fridge to chill for about 15 minutes and preheat the oven to 350F.