Grate the zest of an orange into a medium heavy-bottomed saucepan.

Slice off the peel, removing the white, cottony pith that sticks to the fruit, and slice between the membranes to release the orange segments.

Cut the segments into 1/4-inch wide pieces and toss these into the pan and add the orange juice.

Put the cranberries in the pan, stir in the sugar, set the pan over medium heat and bring to a boil, stirring frequently.

Cook, stirring almost constantly, until the cranberries pop and your spoon leaves tracks, between 5 – 10 minutes.

Scrape the jam into a bowl and taste it, if it’s too tart, add more sugar to taste.

Cool to room temperature. (The filling can be made up to 2 weeks ahead and stored in an airtight container in the refrigerator)

Whisk together the flour, baking powder and salt.

Working with a stand mixer fitted with a paddle attachment, (or with a hand mixer in a large bowl), beat the butter on medium speed until soft and smooth.

Add 1 cup of sugar and continue to beat until it dissolves into the butter.

Reduce the mixer speed to low and add the egg and egg yolk and, beating until they too are absorbed.

Beat in the vanilla.

Add the flour mixture, mixing only until it is incorporated; since this is a delicate dough, one that should not be over beaten, you might want to finish mixing in the flour by hand using a sturdy spatula.

You’ll have a thick dough, one that is quite malleable.

Turn the dough out onto a smooth surface and gather it together in a ball, then divide in half and pat each half into a disk.

Wrap the disks in plastic and refrigerate them for 15 to 30 minutes. (If needed, the dough can be refrigerated overnight; set it out at room temperature for about 20 minutes before proceeding)

While the dough is chilling, center a rack in the oven and preheat the oven to 350 degrees F.

Generously butter a 9” springform pan (preferably nonstick), line the bottom with parchment paper, and butter the parchment paper.

Work with one piece of dough at a time.

For the bottom layer, either roll out the dough to size between two pieces of plastic wrap — it’s an easy enough dough to roll — and lay it in the pan, or put the dough in the pan and press it lightly and evenly across the bottom with your fingertips.

Spread the cranberry filling over the dough.

Unwrap the second piece of dough, but leave it on the plastic.

Press and/or roll it until it is just the diameter of the pan.

Carefully lift the dough and invert it on the filling, lift off the plastic and use your fingers to even it as necessary so that it covers the filling.

Brush the top of the cake lightly with water and sprinkle with the remaining 2 teaspoons of sugar.

Bake for 35 to 40 minutes, or until the top of the cake is lightly golden and a thin knife inserted into the center comes out clean.

Transfer the pan to a cooling rack and cool for about 20 minutes, then run a blunt knife around the cake, release the sides of the springform pan, and let cool to room temperature.

Once cooled, serve as is, dusted with powdered sugar, or topped with a generous scoop of vanilla ice cream.