To make the pie crust, add the flour, salt, and sugar to a food processor and pulse a couple of times to combine.
Cube the butter and add it to the flour. Blend in the food processor until the butter turns into small pieces.
Add the eggs and blend.
If the dough has already come together, there is no need to add water.
If it is still a little crumbly, add a tablespoon or two of water and blend until the dough forms into a solid ball.
Turn the dough onto a floured surface and cut in half. Wrap each half in parchment paper and refrigerate for 10-20 minutes.
After the crusts have chilled, roll each one out into a circle.
Place one of them in a greased pie pan. For the other pie dough, either leave it as is, or cut it into 7-8 equal strips, about 1 inch in diameter each.
In a saucepan over medium heat, melt butter and add flour, maple syrup, cinnamon, nutmeg, vanilla, and lemon juice.
Simmer stirring constantly until thickened. Remove from heat.
Place the peeled, cored, and thinly sliced apples in a medium sized bowl and pour the maple syrup mixture over the apples.
Toss to coat the apples evenly.
Preheat to 400* f. Pour the apple mixture into the pie dish and top with the other pie crust. Or weave the strips to make a lattice on the top.
Bake with crust shield (or aluminum foil) on for 30 minutes, reduce to 375 degrees F., remove the crust shield and bake an additional 20 minutes or until golden brown and cooked through.