01 -
Line a 20 x 20 cm baking pan with parchment paper, ensuring the edges overhang for easy removal.
02 -
In a medium saucepan, add white chocolate chips, sweetened condensed milk, and unsalted butter. Place over medium heat.
03 -
Stir continuously with a heat-resistant spatula until the chocolate and butter are fully melted and the mixture is smooth, approximately 5-7 minutes. Remove from heat.
04 -
Add vanilla extract. Gently fold in chopped nuts and mini marshmallows until evenly distributed.
05 -
Pour the mixture into the prepared pan and smooth the top. Refrigerate for a minimum of 2 hours or until completely firm. Once set, cut into squares for serving.