Prepare the sweet tart dough in the food processor. Chill the dough in the fridge for an hour. Alternatively, you can press the dough into the pan and put it into the freezer for 30 minutes.
Roll the dough out to a thickness. Transfer to a tart pan. Gently press the dough into the edges of the pan making sure to get it into the grooves. Prick the bottom crust with a fork and trim the overhang with a sharp knife. Freeze for 10 minutes or chill in the fridge for 30 minutes.
Blind bake the crust. Line the crust with parchment and weigh down with pie weights or dried beans. Bake at 425° for 12 minutes. Remove the parchment paper and reduce the oven temperature to 350° and bake for another 10 minutes. It should be slightly brown and half baked.
Make the frangipane by adding the ingredients to a food processor and pulsing until smooth. Spread the frangipane evenly in the bottom of the crust.
Top with rhubarb pieces.
Bake for 25 to 30 minutes.
Microwave apple jelly until melted and stir in vanilla bean paste and ginger. Brush over tart to add shine.
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