01 -
Once everything’s cool and firm, cut into bars. Run a sharp knife with a bit of oil for super tidy slices.
02 -
Shake on the last spoonfuls of sprinkles and nonpareils to give it extra crunch and a rainbow finish.
03 -
Stir a little bit of red food color into your white chocolate bowl till it turns a soft pink. If it's lumpy, add a bit of cream to make it smoother. Pour it into a sandwich bag, snip the tip, then zigzag over your bars the other direction.
04 -
Pop just the plain melted white chocolate into a sandwich bag, cut a tiny piece off one corner, and zigzag it over the bars.
05 -
Break up those white chocolate chips into two bowls. Nuke both bowls for 30 seconds, then stir till they’re smooth.
06 -
Press the whole marshmallow mix into your greased dish—get it nice and even. Sprinkle all the cookie bits you set aside right on top.
07 -
Take the pot off the heat. Dump in Rice Krispies, the crushed cookies (except the ones you saved for topping), and a spoon each of sprinkles and nonpareils. Mix well. Add another spoonful of each and keep mixing so it’s all spread out.
08 -
Put butter and marshmallows in a big non-stick pot on low. Stir non-stop until it looks melted and glossy.
09 -
Throw the cookies into your food processor and blitz a few times—you want bits, not dust! Grab out about 1/2 cup (60 g) and hang onto that for later.
10 -
Spray a 23 x 33 cm dish lightly with nonstick spray so nothing sticks.