01 -
Preheat oven to 350°F and grease or line an 8×8 inch baking pan with parchment paper.
02 -
In a microwave-safe large bowl, melt butter and chopped chocolate in 30-second intervals, whisking until fully melted.
03 -
Add granulated sugar to the melted mixture and mix with an electric mixer on medium speed until incorporated.
04 -
Beat in eggs one at a time, then stir in vanilla extract, white vinegar, and red gel food coloring until smooth.
05 -
In a separate bowl, sift together cocoa powder, all-purpose flour, and salt.
06 -
Gradually fold dry ingredients into the wet mixture until just combined, being careful not to overmix.
07 -
Transfer batter into prepared pan, spreading evenly. Bake for approximately 25 to 30 minutes or until a toothpick inserted in the center comes out with moist crumbs.
08 -
Let brownies cool completely in the pan on a wire rack before cutting into 16 squares.