Preheat oven to 350°F and grease a 9-inch pie pan.
Mix almond flour, melted coconut oil, 2 tablespoons maple syrup, and salt until a dough forms, then press into the pie pan and blind bake for 10 minutes.
In a large bowl, whisk together eggs, 1 cup maple syrup, melted butter, and vanilla extract until smooth.
Arrange pecan halves in the pre-baked crust and pour the egg mixture over top.
Bake for 45 minutes until the filling is set and the center jiggles only slightly, then cool completely before slicing.