Preheat oven to 350 degrees. Spray 9x9 pan and line with parchment paper.
In a saucepan on medium heat melt the butter. Remove the butter to a large bowl and add the sugar, vanilla, cocoa powder, salt, food coloring, and vinegar, in that order, mixing between additions. Whisk the eggs in a small bowl and stir it into the cocoa mix. Fold in the flour until lightly combined. Pour the batter into the prepared baking pan.
Bake for 20-22 minutes or until a toothpick inserted comes out clean. Let cool completely before lifting out the brownies.
Crush package of Oreos in a food processor (or in a large plastic bag and rolling pin).Add cream cheese and white chocolate truffles; blend until smooth.
Carefully spread out Oreo truffle mixture on top of baked red velvet brownies. Use your hands to help press it down instead of spreading to avoid tearing the brownies.
Melt Wilton's Red Velvet chocolate candy and white chocolate chips in a separate bowl. Pour the white chocolate over the top. Drizzle the red over the top of the white and use a spoon to swirl it around creating a marble effect.
Let cool completely before cutting into squares.