Line a 9x9 pan with parchment paper or aluminum foil and lightly spray with non-stick spray.

Add the butter to a medium pot and melt over low heat. When the butter is melted, stir in 5 cups of the marshmallows and stir frequently until almost melted.

Turn off the heat and stir in remaining marshmallows, vanilla extract, pumpkin extract, and orange food coloring (optional) - mix well.

Stir in the cereal and mix until completely combined. Transfer to the prepared pan and press into the pan, spreading it out evenly. Let cool for at least one hour before slicing into 16 squares.

Store in an airtight container up to 3 days.