While I feel that the best waffles are made using a homemade waffle mix, I also know that isn't always possible, whether because of not having the ingredients or simply not having the time. You can absolutely use a packaged waffle mix instead. Make the waffle batter according to the directions and cook. Then you will pick back up using the recipe. While there will be a slight difference because of the type of waffle used, the tres leches sauce takes these waffles over the top and you will never know the difference.