01 -
In a sturdy pot, mix butter, sugar, and the ice cream. Heat it up on medium until it starts bubbling.
02 -
Turn the heat down just a bit and cook for 7–10 minutes. Stir nonstop until the thermometer reads 234°F.
03 -
Once off the heat, toss in both kinds of chips. Stir till they're melted and smooth.
04 -
Stir the marshmallow creme into the mixture until it’s completely mixed in.
05 -
Pour the mixture into an 8x8 dish. Sprinkle with the shamrock sprinkles if you're using them. Leave to cool completely.
06 -
Take the set mixture out of the pan and slice it up into about 24 pieces.