Preheat the oven to 350ºF (180ºC). Have ready the pre-baked tart crust (blind baked).
Put the chopped chocolate in a medium mixing bowl.
Heat the cream in a small saucepan until very hot but don't let it come to a boil. You can also heat it in the microwave, being careful not to burn it.
Immediately pour over the chocolate, covering it, wait 30 seconds and then start stirring with a whisk from the center out. The mixture will come together and be shiny and smooth.
Add the milk and mix well. This will lower the temperature before adding the eggs.
Add the egg and egg yolk. Stir well but don't beat. We don't want to incorporate air.
Distribute the fresh berries on the bottom of the tart shell.
Carefully pour the chocolate mixture over the raspberries, being careful not to move them much. I transfer it to a jar for easier pouring and highly recommend it.
Bake for about 20 minutes, until the edges are set but the center barely jiggles. For it to be creamy it's important not to let the center set too much.
Let cool completely on a wire rack.
Cover and refrigerate it for an hour or more before serving.
Serve at room temperature with extra raspberries and a dollop of whipped cream if you like.