Preheat your oven to 425°F

Place a 10- to 12-inch cast-iron skillet or oven-safe pan in the oven to heat up.

In a blender, combine the eggs, milk, flour, sugar, vanilla, and salt.

Blend until smooth, about 20-30 seconds. Let the batter rest for 5-10 minutes.

Once the oven and skillet are fully preheated, carefully remove the skillet and add the butter.

Swirl it around to coat the bottom and sides of the pan.

Quickly pour the batter into the hot pan.

Return it to the oven.

Bake for 20-25 minutes, or until the pancake is puffed and golden.

The pancake will deflate slightly as it cools.

Serve it right away with your favorite toppings.