Roasted Potato Galette with Crème Fraîche and Smoked Salmon

Ingredients

• Potato Galette
• 3 pounds (1360g) potatoes, preferably Yukon Gold (about 7 or 8 medium potatoes), sliced ⅛-inch thick
• 8 tablespoons (113g) unsalted butter
• 4 large garlic cloves (15g), peeled
• 1 teaspoon kosher salt
• ¾ teaspoon freshly ground black pepper
• 1 cup (50g) finely grated Parmesan cheese, plus more as needed
• Finishing
• ¼ cup (65 g) crème fraîche
• 8 ounces (226g) smoked salmon
• ¼ cup (35g) finely chopped red onion
• 2 tablespoons chopped fresh chives
• 2 tablespoons chopped fresh dill
• Capers, as needed (optional)