Plum Galette | Saveur

Ingredients

• 2 cups all-purpose flour
• 1 tsp. sugar
• ¼ tsp. kosher salt
• 12 Tbsp. (6 oz.) cold unsalted butter, cut into ½-inch pieces, divided
• 1 Tbsp. all-purpose flour
• 1 Tbsp. ground almonds
• About ¼ cup sugar, divided, plus more for sprinkling
• 1¼ lb. ripe plums, unpeeled, halved, pitted, and cut into ⅓-inch slices (about 3 cups)
• 1 Tbsp. unsalted butter, melted
• 2 Tbsp. plum jam, warmed (optional)