Justine Doiron’s Tiny Salted Tiramisu Cookies – Cherry Bombe

Ingredients

• 8 tablespoons (113 grams) salted butter, at room temperature
• 3 tablespoons (40 grams) packed dark brown sugar
• ½ cup (110 grams) granulated sugar
• 1 tablespoon rum
• 1 teaspoon ground coffee
• 3 tablespoons (50 grams) mascarpone cheese
• 1¼ cups (175 grams) all-purpose flour
• Diamond Crystal kosher salt
• 1 teaspoon baking powder
• 4 ounces (37 grams) dark chocolate, finely chopped
• Flaky salt, for topping
• 1 tablespoon Dutch processed cocoa powder, for topping