Step 1

Line an 8x8 baking dish with parchment paper and lightly grease. Set aside.

Step 2

Add butter, white chocolate chips, and marshmallows to a large microwave-safe bowl and microwave for 1 minute. Stir contents with a greased spatula then continue microwaving in 30 second increments, stirring in between, until mixture is fully melted and smooth.

Step 3

Allow mixture to cool for about 1 minute then fold in the colored candies.

Step 4

Transfer mixture to the prepared baking dish and use spatula to press into a flat and even layer.

Step 5

Cover with plastic wrap and place in fridge for a minimum of 4 hours or up to overnight.

Step 6

Lift candy out of the dish using the parchment paper. Remove paper and slice into small bite-sized pieces. Store in an airtight container for best results.