First pre-heat your oven to 425 degrees F.
In a food processor or blender, add the eggs, milk, flour, lemon zest and vanilla extract and blend togetehr until everything is smooth and combined.
In a small-medium cast iron pan, melt 2 Tb of butter, swirling around the pan to coat the bottom. Pour in the pancake mixture and place in the oven and cook for 20 minutes.
After 20 minutes, lower the oven to 300 degrees F and cook for an additional 5 minutes.
Once done, remove from the oven and top with raspberry jam, butter and a squeeze of lemon juice.