How to make Finnish oven pancake - Pannukakku recipe

This is one of my childhood favorites..irresistible pancake, topped with jam or just sugar.
Measurements in this recipe are American.
Oven sheet size approx. 16 x 12 in (important, because this pancake needs to be thinner than American pancake)
Finnish oven pancake:
2 eggs
3 cups of whole milk
3 tablespoons sugar
1 teaspoon salt
40g /less than half a stick butter
1 1/2 cups all purpose wheat flour
450°F /30-40 min.