nectarine galette

INGREDIENTS

• 1 cup unbleached all-purpose flour
• 1/2 teaspoons sugar
• 1/8 teaspoon salt
• 6 tablespoons (3/4 stick or 3 ounces) unsalted butter, chilled, cut into 1/2–inch pieces
• 1 tablespoon ground almonds
• 1 tablespoon flour
• 1/4 cup plus 3 tablespoons sugar
• 1 tablespoon
• , pulverized — or — 1 extra tablespoon ground almonds plus an extra teaspoon sugar
• 10 ounces galette dough, rolled into a 14-inch circle and chilled
• 1 and 1/2 pounds ripe nectarines (about 4 large)
• 1 tablespoon unsalted butter, melted
• 1/4 sliced almonds (optional)
• Peach or nectarine jam (optional)