S’mores Tart

Preparation

1. Step 1

   Prepare the tart crust: In a medium bowl, whisk together both flours, salt and cinnamon.

2. Step 2

   In the bowl of a stand mixer using the paddle (or using electric beaters), cream the butter, both sugars and honey on medium speed until combined, about 2 minutes. Add the flour mixture and combine on medium-low, scraping bowl as needed, 1 to 3 minutes.

3. Step 3

   Form the dough into a disk and wrap in parchment or plastic wrap. Refrigerate for at least 2 hours and up to 3 days.

4. Step 4

   When ready to bake the crust, heat oven to 325 degrees.

5. Step 5

   On a lightly floured surface, roll dough into a 12-inch circle. (It’s OK if the dough breaks a bit, you can easily squish it back together.) Use the rolling pin to transfer dough to a 9-inch tart pan, pressing dough up against the sides. Use any leftover dough to patch holes and to build up the sides for extra stability. Cover with foil or parchment paper and pie weights (or rice or dried beans). Bake for 30 to 40 minutes, or until the crust’s edges are golden brown and the crust is firm. Remove weights and foil or parchment paper, and let cool completely.

6. Step 6

   While crust cools, make the ganache: Pour the heavy cream into a small pot and bring to a simmer over medium heat, being careful not to let the cream boil. Place the chocolate, butter and salt in a heatproof medium bowl. Pour the hot cream over the chocolate and let sit for 1 minute. Whisk together the cream and chocolate until glossy and smooth. (If the chocolate doesn’t fully melt, microwave the bowl for 15 to 20 seconds and whisk again until it does.)

7. Step 7

   Pour the chocolate mixture into the cooled crust and spread into an even layer. Place tart in the refrigerator for at least 1 hour and up to 24 hours to firm up the ganache.

8. Step 8

   Prepare the marshmallow filling: Fill a medium pot with an inch or two of water and bring to a simmer. Place the bowl of a standing mixer (or a large metal bowl) firmly and snugly on top of the simmering water (you want the bottom of the bowl to be suspended over the water).

9. Step 9

   Add the egg whites, sugar and cream of tartar to the bowl, and whisk continuously until the mixture becomes white (no longer opaque) and registers 175 degrees on a thermometer. (Use a potholder to steady the bowl, which can get quite hot.) This may take up to 10 minutes. If the temperature isn’t rising, increase the heat under the pot.

10. Step 10

    When the whites are opaque, place the bowl in the mixer fitted with the whisk attachment (or use electric beaters). Add vanilla seeds to the egg white mixture. Beat for 4 to 5 minutes, or until the whites have reached stiff peaks (the whites will be shiny and glossy, and will remain on the whisk or beaters when turned upside down).

11. Step 11

    Pile the marshmallow fluff on top of the tart. Use a knife or spoon to decoratively swirl the meringue. Using a blowtorch, singe the top until golden brown.