In a mixing bowl, add Granulated Sugar (1 2/3 cup), Unsweetened Cocoa Powder (4 tablespoon), All-Purpose Flour (2 1/2 cup), Salt (1/2 teaspoon), Baking Powder (1 teaspoon), and Baking Soda (1 teaspoon). Whisk until combined.
In a mixing jug, add Buttermilk (1 cup), Vegetable Oil (3/4 cup), Large Egg (2), Vanilla Extract (2 teaspoon), Red Food Coloring (4 tablespoon), and Distilled White Vinegar (1 teaspoon). Stir until well incorporated.
Combine wet and dry ingredients. Mix until smooth.
Divide batter evenly between two lightly greased 8-inch cake pans. Smooth out the top. Bake for 25-30 minutes.
In a stand mixer, beat Cream Cheese (8 ounce) until smooth.
Add Powdered Confectioners Sugar (4 cup), Butter (1/4 cup), and Vanilla Extract (1 teaspoon). Mix on low until well incorporated. Increase speed to medium until frosting thickens. Store in fridge until ready to use.
After cake has cooled completely, spread frosting over the first layer.
Place the second layer of cake on top and cover with frosting again.