Preheat oven to 350 degrees F. Spray a pie dish or round tart pan with olive oil cooking spray.
Arrange pear slices, overlapping slightly, around the pie dish. Two circles should be adequate.
Place maple sugar, flour, vanilla, eggs, milk, and salt in a blender and process until smooth. Slowly add melted butter while blending. Pour batter over pears in the dish.
Bake until golden brown, ~40-45 minutes. Serve with a dollop of whipped cream, crème fraiche, or plain greek yogurt.