The chocolate filling needs to be prepared 12-24 hours before baking, so melt butter and chocolate in medium sized saucepan. Remove of heat and allow to cool slightly.
Whisk eggs until thoroughly combined, add vanilla extract.
In a bowl sift the flour and sugar and then add in the egg mixture, beat until smooth and silky. Use a hand-held beater if need be.
Pour in butter and chocolate mixture and continue to beat until smooth.
Cover and chill in the fridge for 12-24 hours until ready to use.
When you're ready to make pies, remove filling mixture from fridge and flick oven onto 180 degrees bake.
For the base, crush wheat biscuits and add to bowl along with remaining dry ingredients.
Melt butter and vanilla in a small saucepan and then add to the dry ingredients.
Mix well, then press even amounts of dough into the base of prepared tin.
Evenly pour chocolate filling into each base until ⅔ full and then bake for about 23 - 25 minutes or until tops have darkened and filling has begun to set. Filling will continue to set once removed from the oven.
Once cooled, top with whipped cream, berries and shaved chocolate. Enjoy!
Recipe by Baker Gatherer at https://bakergatherer.com/chocolate-mud-pie/