To prepare for your Finnish pancakes, start by preheating your oven to 225°C (425°F).
In a large mixing bowl, sift flour and salt.
Add egg, half of the milk, and whisk until there are no more lumps.
Add the remaining milk and continue whisking.
Add the butter to a pan (or skillet) and place the skillet in the preheated oven.
Once the butter has melted, take the pan out of the oven.
Slowly pour the Finnish pancake batter into the pan.
Place the pan back in the oven for 25 to 30 minutes, or until the top of the baked pancake turns golden.
Serve Finnish pancakes with powdered sugar, fresh fruits, or jam.