You will need a 9” tart pan with a removable base.
Dust your surface with icing sugar, then roll out your pastry and cut it 1” larger than the tart pan.
Lightly roll the pastry around a rolling pin. Unroll on top of your tart ring or pan and with your hands gently press dough into pan. Then use a knife to remove any excess pastry.
Prick the bottom of the pastry with a fork (this will prevent the dough from puffing up as it bakes). Cover and refrigerate for about 30 minutes to chill the pastry.
Preheat oven 180°C.
Drain the tin of halved quarters and put aside, for now.
In the bowl, beat the butter and sugar until creamy and smooth (you can do this by hand or with a hand mixer). Then add in the egg and vanilla extract and beat some more, follow this with the ground almonds and flour, then beat until it forms a smooth paste.
Evenly spread the paste onto the bottom of the chilled pastry in the pan, it may not seem like enough but the frangipane will puff up during baking (trust me).
Place the pear quarters evenly over the frangipane paste.
Bake the tart for around 35 minutes or until the crust is golden brown.
Remove from the oven and cool on a wire rack.
In a microwave heat the apricot jam until boiling.
Carefully remove any lumps from the jam (it’s hot!), add the water and stir.
Using a pastry brush, lightly brush the top of the cooled tart with the apricot glaze.