In a skillet over medium heat, melt 1 tablespoon butter.
Add sliced apples and raise heat to medium-high. Cook, stirring sometimes, until apples are golden, about 8–10 minutes.
Sprinkle cinnamon over apples and stir to coat. Remove from heat and let cool slightly.
Arrange apples evenly on the bottom of the prepared pie plate.
Wipe the skillet clean. Melt the remaining 1 tablespoon butter over medium heat.
Pour the melted butter into a blender. Add milk, flour, eggs, sugar, vanilla, and salt.
Blend until smooth.
Pour the batter evenly over the apples in the pie plate.
Bake 25–30 minutes, until puffed and golden.
Let cool until warm. Dust with powdered sugar.
Slice into 6 pieces and serve warm.
Notes
Tips and Tricks
Cooking the Apples
Cook the apples until golden before adding them to the pie plate. This step builds more flavor and prevents soggy results.
Blending the Batter
Blending the batter makes it smooth and helps the pancake rise evenly in the oven.
Ingredient Substitutions
Apples
Gala apples work well, but Honeycrisp or Fuji can be swapped for a similar sweet taste.
Milk
Whole or 2% milk can replace skim if that’s what you have.
How to Store and Reheat
Store leftovers in an airtight container in the refrigerator for up to 2 days. To reheat, place slices on a baking sheet, cover loosely with foil, and warm in a 325°F oven until heated through.