Preheat the oven to 350 degrees.
Spray a baking sheet (11 ¾ x 9 ¼) with cooking spray and pour the mixture evenly in the pan. (See note). Bake for 22-25 minutes or until a toothpick comes out clean.
Allow brownies to cool completely. (See note)
Once the brownies are cooled cut them into squares and place them on a baking sheet lined with parchment paper. Set aside. (See note)
Chop the chocolate mint candies and crush the peppermint candies. Set aside.
Take a medium size pot and add about an inch of water. Take another heat proof bowl that is smaller and put it on top. Turn the heat on to medium low. You don’t want the water to boil just simmer. Add the white chocolate chips and allow them to completely melt. This will take about 5 minutes.
Remove the smaller bowl from the heat wait about 2 minutes then pour the melted chocolate in a sandwich bag. Cut a small hole on the corner.
Drizzle the white chocolate over the cut brownies and top with the chopped candies. Enjoy!