In a medium bowl, mix flour and salt until well incorporated.
Create a well in the flour, and add milk and vanilla; mix well.
Add each egg, one at at a time, mixing well until completely blended.
In an oven-proof skillet, melt butter and saute sliced apples. When apples are soft, sprinkle evenly with spices (cinnamon, nutmet, ground cloves).
Pour batter over apples and cook over medium heat on stovetop, until barely set around the edges. Do not set too firm, otherwise this will not puff up properly in the oven.
Bake for about 15 minutes, or until golden brown and puffy.
Before serving, sprinkle with powdered sugar and serve with a wedge of lemon, if desired.