German Pancakes, Puff Pancake, Old-World, Or Dutch Baby Pancake... Whatever you call them, they are delicious! Easy to make with minimal ingredients and big flavor.
Add the butter to the center of a 9×13 baking dish. Place the dish in a cold oven, then set the oven to preheat to 425°F.
While the oven heats, add the milk, flour, eggs, sugar, vanilla, and cinnamon (if using) to a blender. Blend just until smooth, about 3 to 5 quick pulses.
Once the butter has melted in the hot dish, carefully remove it from the oven. Pour the batter over the melted butter — do not stir.
Return the dish to the oven and bake for 20 to 25 minutes, or until the edges are puffed and golden and the center is set.
Slice and serve warm with fruit, syrup, or your favorite toppings.