Brûléed Buttermilk Tart with Roasted Plums

INGREDIENTS

large egg yolk

1 tbsp

heavy cream

1/2 tsp

vanilla extract

1 1/4 cups

all-purpose flour, plus more for dusting the work surface

2/3 cup

confectioners’ sugar

1/4 tsp

salt

8 tbsp

cold unsalted butter, cut into ½-inch cubes

1 cup

half-and-half

1 cup

buttermilk

1/2 cup

sugar

salt

large egg yolks

3 tbsp

cornstarch

4 tbsp

cold unsalted butter, cut into 4 pieces

1 1/2 tsp

vanilla extract

plums (depending on size)

1 tbsp

light brown sugar (less for sweeter plums, more for tart plums)

Half of a vanilla bean (split lengthwise)

1/8 tsp

ground cardamom

Additional granulated sugar (about 4-6 tbsp.) for brûléeing