In a large mixing bowl, combine the all-purpose flour, granulated sugar, baking powder, fine salt, and ground cinnamon (if desired). Whisk together thoroughly until there are no lumps and all ingredients are evenly distributed.
In a separate medium bowl, crack the eggs and beat them lightly. Then, add the milk, vegetable oil (or melted unsalted butter), and pure vanilla extract. Whisk the mixture until it is smooth and homogenous.
Make a well in the center of the dry ingredients and pour the wet mixture into it. Using a spatula, gently fold the ingredients together until just combined. Take care not to overmix; the batter should remain slightly lumpy for the perfect fluffy texture.
Preheat your waffle iron according to the manufacturer's guidelines, ensuring it reaches the correct temperature for cooking. Lightly grease the surface of the iron with non-stick cooking spray or brush with a thin layer of oil to prevent sticking.
Once the waffle iron is hot, pour the appropriate amount of batter onto the center of the iron (approximately 1/2 to 3/4 cup, adjusting based on the size of your waffle iron). Close the lid firmly and cook the waffle according to the manufacturer's suggested time, usually around 4-5 minutes, or until the waffles are golden brown and crispy.
Upon completion, carefully lift the waffles from the iron using a fork or tongs. Place them on a wire cooling rack to allow air circulation and prevent sogginess while you cook the remaining batter.
Serve the waffles warm and delight in a variety of toppings such as fresh berries, rich maple syrup, fluffy whipped cream, or a light dusting of powdered sugar to elevate your experience.
Notes
Stack the waffles on a serving plate and garnish with fresh berries and whipped cream for an eye-catching display.