In a large bowl, combine the melted butter and the granulated sugar. Whisk for 2-3 minutes. Add in the 2 eggs, the vanilla extract, vinegar, and food coloring, and whisk again until combined.
½ cup butter, ½ cup granulated sugar, ½ cup brown sugar, 2 eggs, 2 teaspoon vanilla, 2 teaspoon white vinegar, 1 tablespoon red food coloring