This looks a lot like my speciality "Flake's Chocolate Fudgecake".
I made these last Friday to take to work - still have some left - easy recipe using graham cracker crumbs for a no-bake brownie - with chocolate icing
MMMMMMM - have you tried these FlakeNoir ??
We don't get Graham crackers here though and so I use (I know, we're weird) biscuits called (either) Round/Super/or Vanilla Wines.
Butter and sugar melted in a pot
Whisk milk and cocoa together
Crush biscuits
Chop (sorry AnnaMarie) a mixture of whatever nuts you have on hand
Add cocoa mixture and nuts to pot
Bring to the boil
Pour at once over the crushed biscuits and add a teaspoon of vanilla, mix.
Turn out into a dish lined with baking paper, press down flat
When cool, ice with chocolate icing. (I always use real chocolate in this as well)
Yummy....