Preheat oven to 425F.

Blend milk, flour, eggs, vanilla extract, and salt together in a blender until batter is smooth.

Melt 3 tablespoons butter in a 10-inch skillet over high heat until bubbling; pour batter into the center of the skillet.

Bake in the preheated oven until puffed and golden, 20 to 25 minutes. Brush with 1 tablespoon butter, drizzle lemon juice over the top, and dust with confectioners' sugar.

For fruit version, add mixed fresh berries as desired and raspberry sauce (below).