Place the buttered and jam bread in food processor when cool and blitz into crumbs. Set aside.
Beat Cold butter, Brown butter, sugars + miso.
Add egg, yolk & vanilla
Fold in dry ingredients and white choc.
Add 60g of the toast crumbs.
Spoon jam over dough to marble-do not over mix
Scoop 3 ounces & coat in the rest of the toast flakes and chill.
Bake at 375 for 11-13 mins
Top with extra white chocolate.