These mint chocolate chip brownies come together quickly with just a few simple steps. The key is to not overbake them so they stay fudgy in the center. The mint layer adds a refreshing contrast to the rich chocolate base.

1. Step 1: Preheat oven and prepare pan

   Preheat your oven to 350°F (175°C). Line an 8x8-inch baking pan with parchment paper, leaving some overhang on the sides for easy removal.

2. Step 2: Mix butter and sugar

   In a large bowl, whisk together the melted butter and sugar until well combined.

3. Step 3: Add eggs and extracts

   Add the eggs one at a time, whisking well after each addition. Stir in the vanilla extract and peppermint extract until fully incorporated.

4. Step 4: Combine dry ingredients

   In a separate bowl, whisk together the flour, cocoa powder, and salt.

5. Step 5: Combine wet and dry ingredients

   Gradually add the dry ingredients to the wet ingredients, stirring just until combined. Be careful not to overmix.

6. Step 6: Add chocolate chips

   Fold in 1/2 cup of semi-sweet chocolate chips until evenly distributed throughout the batter.

7. Step 7: Transfer to baking pan

   Pour the batter into the prepared baking pan and spread it evenly with a spatula.

8. Step 8: Bake brownies

   Bake for 20-25 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs (not wet batter). Be careful not to overbake.

9. Step 9: Prepare mint topping

   While the brownies are cooling, prepare the mint topping. In a small microwave-safe bowl, melt the mint chocolate chips in 20-second intervals, stirring between each interval until smooth.

10. Step 10: Add food coloring

    If using, stir in 2-3 drops of green food coloring to the melted mint chocolate for a more pronounced mint appearance.

11. Step 11: Add mint layer and topping

    Spread the melted mint chocolate evenly over the slightly cooled brownies. Sprinkle the remaining 2 tablespoons of chocolate chips on top while the mint layer is still warm.

12. Step 12: Cool and set

    Allow the brownies to cool completely in the pan, then refrigerate for at least 1 hour to set the mint layer before cutting into squares.

13. Step 13: Cut and serve

    Once set, lift the brownies out of the pan using the parchment paper overhang. Cut into 16 squares and serve.

Store these brownies in an airtight container in the refrigerator for up to 5 days. They can also be frozen for up to 3 months - just thaw in the refrigerator overnight before serving. For an extra special treat, serve slightly warmed with a scoop of vanilla ice cream.