Step 1

Prepare a 9x9 baking dish by lining it with aluminum foil or parchment paper and then buttering or spraying with non-stick cooking spray.

Step 2

Place sweetened condensed milk in a medium saucepan and heat over medium heat stirring constantly until heated through. Heat for about 3-5 minutes, being careful not to boil.

Step 3

Add in white chocolate chips and continue stirring until the chips are completely melted.

Step 4

Remove the saucepan from the heat and add in the butter and sugar cookie mix. Stir until the butter is melted and both ingredients are completely mixed in.

Step 5

Pour the fudge mixture into the prepared pan and place sprinkles across the fudge in an even layer.

Step 6

Place in the refrigerator for at least 4 hours. Remove from the refrigerator about 30 minutes before cutting. Store in an airtight container in the refrigerator.