Hazelnut And Mousseline Cake With Chocolate Buttercream

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"Hazelnut cake with creme mousseline and chocolate buttercream. #thevanillabeanblog"
-- @sarah_kieffer

Recipe Intro From sarah_kieffer

This lovely cake uses a créme mousseline, also known as German buttercream, for the filling. It’s made of a combination of pastry cream and butter that’s whipped until light and fluffy.