Remove the pie crust from the freezer and pour the brownie batter into the pie pan. Gently smooth it out until it is evenly covering the pan.
Sprinkle the reserved peppermint chips over the top of the brownie, then place it in the oven.
After 15-20 minutes of baking, I highly recommend covering your pie crust with aluminum foil or a pie crust cover to protect it from burning. The crust will bake before the brownie is done.
Bake for a total of 45-50 minutes, or until a toothpick pricked in the center of the brownie comes out clean.
Remove it from the oven and allow it to cool, then store it covered at room temperature.