giant rice bubble cake
serves 24 | prep 40 mins (+ 1 hour setting) | cooking 5 mins
525g (15 cups) rice bubbles 600g (6 cups) pink and white marshmallows, separated 240g butter, chopped 240g (1 cup) hundreds and thousands, plus extra, to decorate 3 x 180g blocks white 185ml (3/4 cup) thickened cream 2 x 8g pkt icing flower decorations