Preheat the oven to 425F and place a cast iron skillet in the oven. Allow the skillet to preheat for about 10 minutes to ensure it is hot enough.
While the skillet is heating up, add the following ingredients to a blender: eggs, flour, milk, sugar, salt, and vanilla. Blend on high speed for about 40 seconds until the batter is smooth.
3 eggs,, ½ cup all-purpose flour, ½ cup milk,, 2 tsp sugar, ¼ tsp salt, 1 tsp vanilla extract
Once the skillet is hot, carefully remove it from the oven using oven mitt. Add butter to the skillet to coat the bottom of the skillet. Butter will sizzle as it melts.
3 Tbsp unsalted butter
Pour the batter into the skillet and place it back into the oven. Bake for about 18 minutes or until the pancake is golden around the edges.
When the pancake is done, remove the skillet from the oven. Dust with powdered sugar. Serve with berries.
Notes
Preheating your pan in the oven before adding the batter is crucial for getting a perfectly cooked pancake.