1 (15-ounce) box yellow cake mix
1 cup milk
1/2 cup canola or vegetable oil
1 teaspoon vanilla extract
Cooking spray, for the waffle iron
In a large bowl, combine the cake mix, milk, oil, eggs, and vanilla, and mix together until everything is just combined.
Make the waffles according to your waffle maker's instructions, cooking until the waffles are golden-brown. Cook time will vary between waffle makers, but it is typically 4 to 6 minutes.