Plum Buckle

Ingredients

• 1 teaspoon double-acting baking powder 
• 0.5 lb butter at room temperature
• 2 large eggs 
• 1.5 cups flour all-purpose
• 0.5 teaspoon ground cinnamon 
• 0.3 teaspoon nutmeg 
• 1 teaspoon lemon zest grated
• 0.3 cup milk 
• 1.3 lb plums unpeeled sliced
• 0.3 teaspoon salt 
• 1 cup sugar 

Equipment

• bowl
• oven
• blender
• baking pan
• skewers

Directions

1. In a large bowl, with a mixer on high speed, beat butter and 1 cup sugar until smooth.
2. Add eggs one at a time, beating well after each addition. Beat in lemon peel.
3. In a small bowl, mix flour, baking powder, salt, and nutmeg. Stir half the flour mixture into the butter mixture, then add the milk, followed by the remaining flour mixture; stir just until incorporated. Scrape batter into a buttered and floured 8-inch square glass or ceramic baking pan and spread level. Overlap plum slices in rows or concentric circles over batter. In a small bowl, mix remaining 2 tablespoons sugar and the cinnamon; sprinkle evenly over plums.
4. Bake in a 325 regular or convection oven until a wooden skewer inserted in the center comes out clean, 45 to 50 minutes.
5. Serve warm or at room temperature.