01 -
In a large pot over medium-low heat, melt the unsalted butter completely without browning to create a smooth base.
02 -
Add the mini marshmallows and stir continuously until mostly melted, then mix in the marshmallow creme until the mixture is smooth and uniform.
03 -
Stir in vanilla extract and salt briskly, then gradually add green food coloring gel until you achieve the desired vibrant monster-green hue.
04 -
Remove the pot from heat and gently fold in the Rice Krispies cereal, ensuring even coating with the marshmallow mixture.
05 -
Spray hands with cooking oil to prevent sticking, then quickly scoop and roll mixture into 18 balls (two eyes per ball) before it cools and firms.
06 -
Press two candy eyeballs into each ball while the treats are still warm and tacky to secure them firmly.
07 -
Place treats on a parchment-lined tray and allow them to cool completely before serving or storing.