Mixed Berry Snack Bars

Ingredients:

• 1 stick plus 2 tablespoons unsalted butter, plus more for the pan
• 1/2 cup sugar
• 1 (large) egg yolk
• 1 1/2 cups all-purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon kosher salt
• Sugar, for rolling
• 1 cup dried cranberries
• 1 cup seedless raspberry preserves
• 1/2 teaspoon lemon zest, finely grated

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