Rice Krispie bars

Grease a 16cm x 26cm slice tray and set aside. Chop 1 cup marshmallows and combine in a bowl with Rice Bubbles and 100s and 1000s. Melt remaining marshmallows in a heat-proof bowl in the microwave (on high for 15-20 seconds). Add melted marshmallows and melted butter to the Rice Bubble mixture. Stir well to combine. Transfer mixture into tray and press down with the back of a metal spoon. Refrigerate until set, then cut into 16 bars. Melt chocolate and drizzle over bars. Let it set. Store in an air-tight container in the fridge.