In the bowl of a stand mixer with a paddle attachment beat the butter and salt lightly. Add the powdered sugar, almond powder, and cornstarch. Beat until just evenly mixed.
Add the butter and mix until just combined. Then add all of the flour.
Using parchment paper roll the dough thinly and place on a sheet pan and chill for at least an hour.
Preheat the oven to 350°F, 177°C, or gas mark 4.
Place the pastry shell into the tart pan press it into the sides and then cut off any excess. Poke the base with a fork to make several holes and bake for 15 minutes.
Allow the tart shell to completely cool.
Add the crème patisserie in an even layer and top with the sliced strawberries.