Grapefruit-Vanilla Shortbread

• 1/2 cup (1 stick) unsalted butter, room temperature, cut into pieces, plus more for pan
• 1 tablespoon finely grated grapefruit zest
• 1 teaspoon vanilla extract
• 1/3 cup plus 1 cup powdered sugar
• 1 cup all-purpose flour
• 1/2 teaspoon kosher salt, plus more
• 2 tablespoons fresh grapefruit juice
• Himalayan pink salt, dried hibiscus flowers, red sprinkles or sanding sugar, dried rose petals, and/or cracked pink peppercorns (for serving; optional)
• A 9-inch springform pan

1. Lightly butter pan. Pulse grapefruit zest, vanilla extract, 1/2 cup butter, and 1/3 cup powdered sugar in a food processor until smooth and homogenous. Add flour and 1/2 tsp. kosher salt; pulse just to combine. Press dough evenly into prepared pan, smoothing top with a flat-bottomed glass or measuring cup. Chill until firm, about 1 hour.
2. Preheat oven to 350u0b0F. Prick shortbread all over with a fork 1"-2" apart, and bake until edges are golden and center is pale but firm to the touch, 15-18 minutes.
3. Remove band from pan and immediately cut shortbread into 16 wedges. Let cool.
4. Whisk grapefruit juice, a pinch of kosher salt, and remaining 1 cup powdered sugar in a small bowl until smooth. Spread a thin layer of icing over shortbreads with a small offset spatula, leaving a thin border of crust exposed. Top as desired. Let sit 10-15 minutes to allow glaze to set. Retrace cut marks.
5. Dough can be pressed into pan 1 day ahead. Cover and chill.

unsalted butter, vanilla, powdered sugar, flour, kosher salt, fresh grapefruit juice, pink salt, springform pan

Taken from www.epicurious.com/recipes/food/views/grapefruit-vanilla-shortbread (may not work)