1/2 teaspoon baking soda
1 1/2 cup maple syrup
1 cup flour
1 cup brown sugar
1/2 cup butter
1 unbaked 10" single pie crust (1 bottom only)
Dissolve baking soda in maple syrup. Place in pie crust (first).
Mix flour, brown sugar and butter with your fingertips. Place in pie crust (last).
Bake at 350*F for 30 minutes.
Serve plain, "a la mode" (with ice cream - vanilla), or with not-too-sweet whipped cream.
You can use half-half maple syrup and corn syrup if, well, 1 1/2 cup cup maple syrup is too expensive.
Photo Attribution: http://commons.wikimedia.org/wiki/File:Recette_tarte_sucre_complet_cannelle_9.jpg