Chocolate Nut Truffle

i have been seduced by this gorgeous photo & idea of delicious chocolate & nuts combined into a fabulous snack. yummy!

FROM ANNE'S FOOD (annesfood.blogspot.com)
(suitable for a dish of approx. 23x33 cm)
FOR THE NUT BOTTOM:
125g pecan nuts
125g hazelnuts
50g pistachio nuts
150ml sugar
75g melted butter
FOR THE TRUFFLE:
300g dark chocolate
300ml cream (heavy, whipping, double - 35-40% fat content is what you want)
125g unsalted butter, at room temperature
4 egg yolks
Directions:
FOR THE NUT BOTTOM:
1) Crush the nuts coarsely in a food processor.
2) Mix w/sugar & melted butter.
3) Press out into a large dish (23*33 cm) that you have lined with foil or paper. Let cool completely.
FOR THE TRUFFLE:
4) Chop the chocolate & place in a large bowl.
5) Bring the cream to a boil & pour it over the chocolate. Stir until smooth.
6) Add the butter and the egg yolks, & stir until everything is completely mixed.
7) Pour this on top of the nut bottom, cover w/plastic and place in the freezer.
8) Thaw before serving (or cutting) but not completely - it should still be cold and firm.
TO TOP:
You can use anything to top it really - I used finely crushed freeze-dried berries, but a little pinch of chilli flakes would be nice, sea salt is always good, a sprinkling of finely ground nuts wouldn't hurt, or by all means just leave it plain. We've had leftover pieces with coffee, or for a slightly more fancy dessert, with a side of a simple raspberry sauce. (Mash raspberries with some powdered sugar.) All good. Very good.

http://annesfood.blogspot.com/2007/01/chocolate-nut-truffle.html