01 -
Preheat oven to 350°F (175°C). Grease or line an 8×8 inch baking pan with parchment paper.
02 -
Combine chopped butter and semi-sweet chocolate in a microwave-safe bowl. Heat in 30-second intervals, stirring until fully melted and smooth.
03 -
Add granulated sugar to the melted butter and chocolate mixture. Beat with an electric mixer on medium speed until fully incorporated.
04 -
Add eggs one at a time, mixing well after each addition. Stir in vanilla extract, white vinegar, and red gel food coloring until evenly combined.
05 -
In a separate bowl, sift together cocoa powder, all-purpose flour, and salt.
06 -
Gradually fold the dry ingredients into the wet mixture, mixing until just combined to avoid overmixing.
07 -
Pour batter evenly into the prepared baking pan, scraping the bowl with a spatula to incorporate all mixture.
08 -
Bake for 30 to 35 minutes or until a toothpick inserted in the center comes out with a few moist crumbs but no wet batter.
09 -
Allow brownies to cool completely in the pan on a wire rack before cutting into 16 squares.