"These delicate jam-filled bar cookies are made with frozen dough that's grated into the pan, which gives them a very light and crumbly texture. If you can’t find rose petal jam, substitute any jam you like...."
INGREDIENTS
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2¾ cups (330 grams) all-purpose flour
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1¼ teaspoons baking powder
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½ teaspoon ground cardamom
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²⁄3 cup (132 grams) sugar
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Grated zest of 1 Meyer lemon, or 1 teaspoon grated zest from a garden-variety lemon
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½ pound plus 6 tablespoons (312 grams) unsalted butter, at room temperature
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½ teaspoon plus ⅛ teaspoon kosher salt
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3 large egg yolks
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¾ cup (178 milliliters) rose petal jam, or raspberry jam, homemade or store-bought, scented with 1 teaspoon rose water