Preheat the oven: Set your oven to 350°F (175°C) and grease an 8x8-inch baking pan.
Mix the wet ingredients: In a medium bowl, whisk together the melted butter and sugar until smooth. Add the eggs and peppermint extract, whisking until fully combined.
Add dry ingredients: Sift in the cocoa powder, flour, and salt. Gently fold the mixture together until just combined (do not overmix).
Fold in the chips: Stir in the mint chocolate chips.
Bake: Pour the batter into the prepared pan and spread it evenly. Bake for 20-25 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
Cool and serve: Allow the brownies to cool completely in the pan before slicing. Enjoy your minty, chocolatey treat!
