01 -
Preheat the oven to 350°F. Line a 9×9-inch baking pan with parchment paper, allowing for an overhang along the sides to facilitate easy removal.
02 -
Combine 1/2 cup of the semisweet chocolate chips and the vegetable oil in a microwave-safe bowl. Microwave in 15-second intervals, stirring after each, until mixture is fully melted and smooth. Let cool slightly.
03 -
Add the granulated sugar, light brown sugar, eggs, and vanilla extract to the bowl of a stand mixer fitted with a whisk attachment. Beat on high speed for 5–6 minutes until pale, thick, and doubled in volume. Periodically scrape down the bowl sides to ensure thorough mixing.
04 -
With the mixer on low speed, gradually stream in the cooled melted chocolate mixture. Blend just until combined.
05 -
In a separate bowl, whisk together the all-purpose flour, Dutch-processed cocoa powder, and kosher salt.
06 -
Fold the dry ingredients into the wet mixture until just incorporated. Stir in the remaining 3/4 cup chocolate chips. Pour the batter into the prepared pan and smooth the top. Sprinkle crushed peppermint candies evenly over the surface. Bake for 30 to 45 minutes, until a toothpick inserted in the center emerges with moist crumbs attached.
07 -
Allow brownies to cool completely in the pan before lifting out using parchment overhang. Cut into squares and serve.