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Milky Way Tart

I got the idea for this tart many years ago from Maury Rubin’s Book of Tarts, and it has become a favorite of Flour customers. In the book, Rubin offers myriad creative, unconventional fillings for tarts, including the idea of recreating the popular Milky Way candy bar in tart form. For the Flour version, I make a buttery caramel (which is a pretty amazing ice cream or dessert sauce in its own right) and layer it on a sweet tart shell. Then I pile on a mound of light, fluffy milk chocolate mousse that has a hint of coffee flavor to give it extra depth and to keep it from being too sweet. More caramel is drizzled on top, and a shower of milk chocolate curls finishes it off. Of course, the finished tart tastes far better than any candy bar!–Joanne Chang

LC Just Gained Five Pounds While Reading This Recipe Note

Oh, whatever. This luscious tart is worth it. It’s also worth the overnight restraint required for the mousse to set. And if you’re too distracted by thoughts of this uber-airy tart (or the untold calories it certainly contains) to patiently make Chang’s decadent caramel, you could cheat and use an already made caramel sauce. But don’t you dare rely on just any old brown goo in a glass jar. Only the finest caramel sauce will do.

Milky Way Tart Recipe

  • Quick Glance
  • 45 M
  • 9 H
  • Serves 8 to10

Ingredients

  • For the milk chocolate mousse
  • 5 ounces milk chocolate, chopped
  • 2 cups (1 pint) heavy cream
  • 2 teaspoons instant coffee powder
  • 1/8 teaspoon kosher salt
  • For the caramel filling
  • 3/4 cup granulated sugar
  • 1/3 cup water
  • 3/4 cup heavy cream
  • 2 tablespoons unsalted butter
  • 1/4 teaspoon kosher salt
  • 2 teaspoons vanilla extract
  • For the tart
  • 1 baked and cooled 10-inch Pâte Sucrée tart shell
  • 3 to 4 inch slab milk chocolate, at warm room temperature, for decorting

Directions

  • Make the mousse
  • 1. Place the chocolate in a small heatproof bowl. In a medium saucepan, combine the cream and instant coffee powder and heat over medium-high heat until the mixture is scalded, which means when bubbles start to form around the edge of the pan but the cream is not boiling.
  • 2. Immediately pour the hot cream mixture over the chocolate and let stand for about 1 minute. Then whisk gently until the chocolate is completely melted and the mixture is smooth. Strain through a fine-mesh sieve into a small container, stir in the salt, cover tightly, and refrigerate until it is absolutely, completely chilled, at least 8 hours and up to 3 days. A few hours is not enough. (Because the cream has been heated, it will not whip properly unless it is very cold.)
  • Make the caramel filling
  • 3. Place the sugar in the bottom of a medium saucepan and slowly pour in the water. Stir gently to moisten the sugar. If any sugar crystals are clinging to the sides of the pan, brush them down with a pastry brush dipped in water. Place the pan over medium-high heat and leave it undisturbed until the mixture comes to a rolling boil. (You want to avoid crystallization of the syrup, which can happen if the pan is disturbed before the sugar starts to color.) Then continue to boil rapidly without moving the pan until the sugar syrup starts to caramelize. This will take 3 to 4 minutes: the sugar syrup will boil furiously; then as it thickens, it will boil more languidly; and then you will see some of the syrup starting to color and darken around the edge of the pan.
  • 4. When you see color in the pan, gently swirl it in a circular motion so the sugar caramelizes evenly. The syrup will start to turn golden brown, and then as you swirl the pan, the syrup will continue to get a bit darker and then darker still. To check the true color of the caramel, tilt the pan so you can see the syrup covering the bottom. This is the actual color of the caramel, and you want to keep cooking the caramel until this layer is a deep amber-brown. It takes just seconds for caramel to go from great to burnt, so be sure to tilt and check constantly.
  • 5. As soon as the caramel is ready, slowly add the cream and then reduce the heat to low. Be careful. The steam that rises when the cream hits the caramel is extremely hot. Let the caramel and cream sputter for a few seconds until the mixture settles down, and then whisk to mix in the cream. Turn the heat up to medium and whisk together the caramel and cream (the mixture will have hardened a bit) for 2 to 3 minutes, or until they come together. Whisk in the butter, salt, and vanilla. Remove from the heat, pour into an airtight heatproof container, and refrigerate for at least 4 hours and up to 1 week.
  • Assemble the tart
  • 6. Place the tart shell on a flat plate. Spread about three-fourths of the caramel filling evenly in the bottom of the tart shell. Using a stand mixer fitted with the whip attachment or a hand-held mixer or a whisk, whip the mousse on medium speed until it holds soft peaks. Mound the mousse in the tart shell, and spread it evenly over the caramel filling. Drizzle the remaining one-fourth caramel filling in a crisscross pattern on top of the mousse. Using the back of a small knife or a vegetable peeler, shave curls from the milk chocolate slab. (Make sure the chocolate is slightly warm, or you will get splinters instead of curls.) Decorate the tart with the curls. Refrigerate the tart for at least 30 minutes before serving. (The tart can be stored in an airtight container in the refrigerator for up to 8 hours.)
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