- Unsalted butter, for greasing
- 1¼ cups flour, plus more for pan
- ⅔ cup sugar
- ¼ tsp. kosher salt
- 4 cups milk
- 1 tsp. vanilla extract
- 4 eggs
Heat oven to 425°. Butter and flour a 10″ pie plate; set aside. Whisk flour, sugar, and salt in a bowl. Whisk milk, vanilla, and eggs in another bowl until combined. Slowly whisk dry ingredients into wet ingredients to make a smooth batter. Pour batter into prepared pie plate; bake until browned in places, puffed in the center, and set around the edges, about 1 hour and 45 minutes. Transfer to a wire rack and let cool to room temperature. Chill 30 minutes before slicing.