Preheat your oven to 350°F (175°C) and line your mini muffin tin with parchment paper.
Melt the semi-sweet chocolate chips and butter in a microwave-safe bowl, stirring in 20-second intervals until smooth.
Whisk together sugar, eggs, and vanilla in another bowl until well combined.
Combine the melted chocolate mixture with the sugar and egg mixture, stirring until smooth.
Gently fold in flour, cocoa powder, salt, and peppermint extract until just combined.
Fill each mini muffin cup 3/4 full with the brownie batter.
Bake for 12-15 minutes until the tops are set, and a toothpick comes out with a few moist crumbs.
Allow the brownie bites to cool in the tin for a few minutes, then transfer them to a cooling rack.
Melt the white chocolate chips and drizzle or pipe over the brownie bites. Immediately sprinkle with candy cane bits.
Let the icing set, and your Homemade Chocolate Peppermint Brownie Bites are ready to enjoy.