In a large bowl, whisk together the flour, sugar, and salt.
In a separate bowl, dissolve the yeast in the warm milk and let it sit for about 5 minutes, until it begins to foam.
In the bowl with the flour mixture, make a well in the center and add the eggs, yeast mixture, and melted butter. Stir until just combined.
Cover the bowl with plastic wrap and let the batter rise in a warm, draft-free place for about 1 hour, until it has doubled in size.
Preheat your waffle iron to medium-high heat. Brush the grates with vegetable oil.
Pour the batter into the center of the hot waffle iron and spread it evenly to the edges. Cook the waffle for about 5 minutes, or until the edges are crispy and the top is golden brown.
Repeat with the remaining batter. Serve the waffles hot with your desired toppings. Enjoy!