In a stand mixer or food processor, cream together the butter and sugar, until is light and fluffy. Scrape down the sides of the bowl and then add the eggs one at a time, scraping down after each. (The batter may appear curdled until you add the dry ingredients.) Add the extract. Add the ground almonds and flour, mix until well combined.
Preheat the oven to 400℉.
Remove the tart crust from the freezer. Fill the tart with a layer of jam, about 1/8-inch thick. Spoon on the frangipane filling, it should be just below the top of the crust. I used cherry and blueberry jam for the fruit tarts. (For the coconut tart I mixed shredded coconut to the frangipane. About 2 tablespoons shredded coconut per 1/2 cup of frangipane.)
Add fruit to the top, to match the jam that you have used.
Bake for about 20-30 minutes, depending on the size of your tarts.
They will be slightly puffy and golden brown. Remove, run a knife around the edge, to loosen any stuck filling from the molds and allow to cool.
Serve at room temperature with absolutley nothing at all or a scoop of ice cream or dollop of cream. I'm in love with this tart all over again. I have to say that the cherry was my favorite. *If I make the coconut one again I will put a layer of German chocolate coconut icing as the layer of jam.