Tiramisu Tart with Shotbread Crust

(6)
"A sweet shortbread pâte sucrée crust, a rich layer of silky chocolate mascarpone, and a piped topping of just-sweet-enough coffee mascarpone. Dusted with a layer of cocoa powder, it hits all the key flavors of a tiramisu minus the sweet Marsala wine usually found in the dessert."
-- @theflouredtable