First make the crust by crushing the cookies in a food processor to fine crumbs add the sugar & melted vegan butter pulse to the consistency of wet sand
Press this mixture into the bottom of a 7" spring form pan lined with an acetate cake strip * see notesFreeze until needed Now prepare the mousse by combining the warmed & melted hazelnut butter with melted chocolate & whisk smooth
Add the hot plant milk to the chocolate mixture & whisk smooth
Wait until the mousse base is no hotter than 80℉ or you will melt your whipped cream, once the base is at proper temperature fold in the vegan whipped cream
Pour into the prepared pan on top of the crust & freeze the cake for at least 2 hours or until it is firm enough to unmold
Meanwhile prepare the Vegan Ferrero Rocher truffles
Melt the vegan chocolate in a medium bowl add the warm plant milk, nut butter, vanilla & whisk smooth
Refrigerate to set to a scoopable consistency then using a 1 Tablespoon scoop place 1 toasted hazelnut inside each scooped ball of ganache
Dip each one in the crushed wafers or toasted crushed hazelnuts
Prepare the ganache for icing according to the instructions on that recipe post
Cool slightly then pour over the mousse cake & decorate with the truffles