Preheat oven to 300°F (150°C) and line baking sheets with parchment paper.

In a large mixing bowl, cream the room-temperature unsalted butter and confectioners' sugar for about 4 minutes until light and fluffy.

Add vanilla extract and salt, blending on low speed until just combined.

Gradually sift in all-purpose flour and masa harina, gently folding until a crumbly dough forms.

Fold in chopped pistachios and dried cranberries until evenly distributed.

Scoop tablespoons of dough, roll into balls, and place them 2 inches apart on prepared baking sheets.

Bake for 22-25 minutes until pale golden; cool for 5 minutes on sheets before transferring to a wire rack.

Dust tops with confectioners' sugar once cooled.