01 -
Melt butter over medium-low heat in a large saucepan. Add miniature marshmallows and stir continuously until completely melted and smooth.
02 -
Remove the pan from heat and mix in the vanilla extract, ensuring it is fully combined with the melted marshmallow mixture.
03 -
Sprinkle heat-treated Funfetti cake mix into the melted mixture, stirring until fully dissolved and no clumps remain.
04 -
Gently fold Rice Krispies cereal into the mixture, followed by the popped buttered popcorn. Continue folding until all pieces are evenly coated.
05 -
Add desired amount of multi-colored sprinkles and fold carefully to distribute without melting the colors.
06 -
Spread the popcorn mixture in an even layer on parchment paper. Sprinkle with flaky sea salt and allow to cool completely before breaking into pieces for serving.