Pear tart with walnut crust
For the crust: 1 cup oat flour 3/4 cup walnut pieces 1/2 teaspoon kosher salt 1 stick unsalted butter, frozen and coarsely grated 3 tablespoons ice water For the poached pears: 2 cups water 2/3 cup granulated sugar 1 teaspoon ground cinnamon 1/2 teaspoon ground ginger 1/2 teaspoon ground vanilla bean or vanilla bean paste…