In a mixing bowl, combine flour and sugar for the crust. Cut in cold butter until the mixture resembles coarse crumbs. Add egg yolk and cold water, mix until dough forms. Press into a tart pan and chill for 30 minutes.
Blind bake the crust for 15 minutes. Remove from oven and let cool.
In another bowl, cream together butter and sugar for the filling. Add eggs one at a time, then mix in almond flour and vanilla extract.
Spread the filling into the cooled crust. Arrange pear slices on top.
Bake for 30 minutes or until the filling is set and the pears are tender. Let cool before serving.