Preheat your waffle maker according to the manufacturer’s instructions.
In a large mixing bowl, whisk together the flour, sugar, baking powder, baking soda, salt, and cocoa powder until well combined.
In a separate bowl, mix together the buttermilk, eggs, vegetable oil, red food coloring, and vanilla extract until smooth.
Pour the wet ingredients into the dry ingredients and stir gently until just combined. Be careful not to overmix; a few lumps are okay.
Lightly grease the waffle maker with cooking spray or oil.
Pour an appropriate amount of batter into the preheated waffle maker (about ½ to ¾ cup, depending on the size of your machine).
Close the lid and cook according to the manufacturer’s instructions, usually around 4-5 minutes, or until the waffles are cooked through and golden brown.
Carefully remove the waffles and keep them warm while you repeat the process with the remaining batter.
Serve the red velvet waffles warm with cream cheese syrup or your choice of toppings.