In a medium double boiler saucepan, combine your white chocolate chips, sugar cookie mix, sweetened condensed milk, and butter. Heat over medium flame, stirring continuously until everything is beautifully melted and wonderfully smooth.
Once fully melted, continue to stir gently for 2-3 more minutes, just to ensure it's perfectly combined and absolutely lump-free.
Carefully remove the saucepan from the heat (keeping it on the double boiler setup). Stir in the pure vanilla extract and half of your festive sprinkles. Mix everything together until the sprinkles are evenly distributed throughout the fudge.
Line a 9x9 inch baking dish with parchment paper, making sure to leave some overhang on the sides for easy lifting. Lightly coat the parchment paper with cooking spray.
Transfer your delicious fudge mixture into the prepared baking dish and smooth the top evenly with a spatula. Immediately press the remaining sprinkles onto the surface of the fudge for a vibrant, festive finish.
Place the dish in the refrigerator to chill for 2-3 hours, or until your fudge is completely firm and set.
Once hardened, gently lift the fudge out of the baking dish using the parchment paper overhang. Place it on a sturdy cutting surface and cut it into 16 delightful, bite-sized pieces.
In a microwave-safe bowl, melt the almond bark (or extra white chocolate) in 30-second intervals, stirring well after each, until it's smooth and perfectly melted.
Transfer the melted bark to a small zippered bag, snip off just a tiny corner, and drizzle it artfully over your fudge pieces. You can also simply use a fork for a lovely rustic drizzle!
Let the drizzle set completely at room temperature or in the fridge for a few minutes, then savor these sweet, homemade Valentine's Day treats!