Blueberry Dutch Baby Delight

First, preheat your oven to a high temperature of 425 degrees Fahrenheit or 220 degrees Celsius.

Next, combine the dry ingredients - that is flour and salt - with a few drops of vanilla extract, eggs, and milk in a powerful blender. Blend the mixture on high speed until it's completely smooth, very thin, and has a uniform consistency, taking about 1 minute to achieve this.

Then, place a large cast iron skillet with a diameter of either 9 or 10 inches over extremely high heat; add melted butter into the skillet and use a pastry brush to coat the sides thoroughly. Allow the butter to heat up until it starts to emit a faint smoke.

Immediately pour the batter into the center of the skillet, followed by a generous sprinkling of blueberries on top. Carefully transfer the skillet to the center of your preheated oven and bake until it's nicely browned, puffed up, and golden in color, taking approximately 20 to 25 minutes.

After removing the skillet from the oven, brush the top immediately with melted butter and squeeze some fresh lemon juice over it as the Dutch baby starts to deflate. Finally, dust the top with powdered sugar.

To serve, cut the Dutch baby into wedges and drizzle it with a sweet maple syrup.