Pulse process flour and confectioner’s sugar in food processor fitted with steel blade until combined, 5 to 6 pulses. Add butter; pulse process until mixture resembles coarse cornmeal, 8 to 10 pulses. Add egg; pulse process 5 to 6 times. Mixture will be crumbly. If necessary, add 1 teaspoon cream; pulse process 2 to 3 more times.
Dump onto piece of parchment paper or other surface. Knead just until dothe ugh comes together. (See Tip 2).
Pinch off 1-ounce pieces, about the size of a golf ball. Roll into a ball, and flatten onto a surface dusted with confectioners' sugar. Cover with a piece of parchment paper, and roll ⅛-inch thick. Cut with a 3 ½-inch round cutter. Gently press into the mold; cut away excess dough. Generously prick all over with a fork. (See Tip 3)
Freeze for 20 minutes. (See Tip 4)
Bake in preheated oven for 20 to 25 minutes, or until golden brown. Allow to cool completely. Yield: 24 mini tart shells.
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Notes
I used Gold Medal Blue flour because if its lower protein content.
Dough can be made ahead of time up to this point. Flatten into a disk; wrap in plastic wrap and refrigerate for up to 2 days in advance. Remove from the refrigerator 30 minutes before use.
I used mini round nonstick tart pans. They were the perfect size for producing mini fruit tarts.
Freezing the dough before baking is important to ensure it doesn't shrink in the pastry mold.