In a medium-sized bowl, whisk together the flour, cocoa powder, baking soda and salt. Set aside.
In a large bowl mix butter with sugar until light and creamy. Add eggs one at a time. Add vanilla extract and mix to combine.
Gradually incorporate flour mixture. Cover the bowl with plastic wrap and refrigerate for at least 30 minutes.
Preheat the oven to 350F (180C). Line baking sheets with parchment paper.
Using your ice cream scoop take equal portions of dough, about 1 inch (2.5 cm) balls. Place on the prepared baking sheet. Repeat with remaining dough, keeping 2 inches (5cm) space between cookies.
Use your thumb or ½ tsp to make an indentation into the center of each cookie.
Bake for 9-10 minutes. While still warm press the center of the cookies as much as needed.
Cool on baking sheets for 5-10 minutes. Remove to the cooling rack to cool completely.
While they cool, prepare the chocolate ganache. Place the chocolate and cream into a heatproof bowl and melt over bain-marie.
Fill the cookies with chocolate ganache and sprinkle some freeze dried raspberries.
Let the cookies set slightly before serving. Enjoy!