Plum Cake - Master recipes

Ingredients

• 3/4 c. unsalted butter -
• 1 1/2 c. all-purpose flour (spooned and leveled) -
• 2 tbsp. all-purpose flour (spooned and leveled) -
• 1/2 tsp. baking soda -
• 1/4 tsp. salt -
• 1/2 c. packed light-brown sugar -
• 1/2 c. granulated sugar -
• 3 large eggs -
• 1 tsp. pure vanilla extract -
• 2 tsp. finely grated lemon zest -
• 1/4 c. sour cream -
• 3 plums -
• Confectioners' sugar -