01 -
Combine melted butter, egg, vanilla extract, and cream cheese in a large bowl. Mix until smooth and fully incorporated.
02 -
Gradually fold in the strawberry cake mix until a uniform dough forms. Do not overmix.
03 -
Using a spatula, gently fold in the white chocolate chips and M&Ms to evenly distribute throughout the dough.
04 -
Cover bowl with plastic wrap and refrigerate for at least 1 hour. Chilling prevents cookies from spreading too much during baking.
05 -
Preheat oven to 350°F (175°C). Line a baking sheet with parchment paper.
06 -
Scoop dough in walnut-sized balls (about 1 tablespoon each) and arrange spaced apart on the prepared baking sheet.
07 -
Bake for 9 to 10 minutes, or until the edges are set but centers remain soft. Do not overbake.
08 -
Allow cookies to cool briefly on the baking sheet, then transfer to a wire rack to cool completely.