TRADITIONAL GALETTE DES ROIS
85 grams unsalted butter at room temperature
85 grams icing sugar, also called confectioners sugar
85 grams almond flour
¼ teaspoon salt
2 large eggs, at room temperature
1 tablespoon rum (optional)
1 teaspoon pure vanilla extract
2 x 24 cms (9 1/2 inch) circles of puff pastry, cold
Whole almond or dried bean for the charm
To Make the Filling
Working with a mixer or by hand, beat the butter and sugar together until creamy and light. Beat in the almond flour and the salt. Mix in 1 whole egg, then the white from the second egg (reserve the yolk). Mix in the rum, if using, and the extract. Cover, and refrigerate for at least 1 hour.
Mix the yolk with 1 teaspoon cold water; cover, and refrigerate until needed.
Place one circle of dough on a baking sheet lined with parchment paper. Spread the filling evenly over the dough, leaving a 1-inch border bare. Press the charm into the filling. Moisten the border with cold water, position the second circle of dough over the filling and press around the border with your fingertips to seal well. Using the back of a table knife, scallop the edges by pushing into the dough (about ¼- to ½-inch deep) every ½ inch or so. Refrigerate for at least 30 minutes.
Heat the oven to 220 C (425 F). Brush a thin layer of the reserved yolk glaze over the top of the galette, avoiding the border (if glaze drips down the rim, the galette won’t rise). With the point of a paring knife, etch a design into the top of the galette, taking care not to pierce the dough. Cut 6 small slits in the top as steam vents.
Turn the heat down to 200 C (400 F), and bake for 30 to 40 minutes, until the galette is puffed and deeply golden. Check after 20 minutes, and tent loosely with foil if it’s browning too much or too fast. Transfer to a rack, and cool for at least 15 minutes (the galette may deflate — that’s puff pastry for you!). Serve warm or at room temperature.