6 tbsp unsalted butter – melted and cooled slightly
2 cups all-purpose flour
1 tbsp granulated sugar
2 tsp baking powder
0.5 tsp kosher salt
1.75 cups whole milk
2 large eggs – lightly beaten
1 tsp vanilla extract
1 tbsp vegetable oil – for brushing the waffle iron
maple syrup – for serving
unsalted butter – for serving
Instructions
Preheat your waffle iron to medium-high heat until thoroughly hot, about 10 minutes; if your oven has a warm setting, set it to 200°F and place a wire rack on a sheet pan inside.
Melt the unsalted butter in a small saucepan over low heat or in a microwave-safe bowl until just melted, 30–60 seconds; let cool 2 minutes so it doesn’t scramble the eggs.
In a large bowl, whisk together the all-purpose flour, granulated sugar, baking powder, and kosher salt until evenly combined, 20–30 seconds.
In a separate bowl, whisk the whole milk, eggs, and vanilla extract until smooth, 30 seconds; whisk in the melted butter until emulsified, 15–20 seconds.
Pour the wet mixture into the dry ingredients and whisk just until no dry flour remains and a few small lumps persist, 15–20 seconds; let the batter rest to hydrate and thicken, 5–10 minutes.
Brush the hot waffle iron lightly with vegetable oil, about 1 tsp per batch, until the grids are thinly coated.
Ladle batter onto the iron (about 1/2 cup for a standard 7-inch round or per manufacturer’s guidance), close, and cook until steam subsides and the waffle is deep golden and crisp, 3–5 minutes.
Transfer cooked waffles to the wire rack in the warm oven to stay crisp, up to 15 minutes. Re-oil the iron as needed and repeat with remaining batter.
Serve the waffles hot with maple syrup and unsalted butter to taste.