Method
- Step 1: Preheat oven to 350°F (175°C). Line a 9x13-inch pan with parchment paper, leaving an overhang for easy lifting later. Lightly spray the parchment. In a medium bowl, whisk flour, cocoa powder, and salt together, then set aside.Step 2: In a large bowl, whisk melted butter and sugar together for 1–2 minutes until glossy and well combined. Add eggs one at a time, whisking well after each, until the batter looks smooth and shiny. Stir in vanilla and red food coloring until evenly mixed and deep red with no streaks.Step 3: In a small bowl or measuring cup, mix buttermilk, vinegar, and baking soda. It will foam—this is exactly what you want. Immediately pour it into the batter and stir just until combined.Step 4: Add the dry ingredients into the wet mixture and fold gently with a spatula until no flour streaks remain. Do not overmix or the brownies will turn tough. Spread batter evenly into the prepared pan.Step 5: Bake for 28–32 minutes, until a toothpick in the center comes out with a few moist crumbs (not wet batter). Let brownies cool completely in the pan for at least 1 hour before frosting.Step 6: Make the frosting by beating softened cream cheese and butter until smooth and fluffy, about 2–3 minutes. Add powdered sugar, vanilla, and salt. Beat until light and spreadable. Once brownies are fully cooled, spread frosting evenly over the top. Chill for 20–30 minutes before slicing for clean edges.
Notes
Nutrition Facts (per serving): Carbs: 38g | Protein: 3g | Fat: 15g