Plum Crumb Cake

Ingredients

• 2 2/3 cups all-purpose flour
• 1/3 cup granulated sugar
• 1 teaspoon baking powder
• 1/3 cup granulated sugar
• 1 teaspoon baking powder
• 1/3 cup unsalted butter, room temperature
• 3 large eggs
• 2 lbs ripe red plums (about 4 cups) or 2 lbs ripe purple plums, pitted, quartered (about 4 cups)
• 1/2 cup packed light brown sugar
• 1/2 teaspoon cinnamon
• 1/4 teaspoon grated nutmeg
• 1/2 cup unsalted butter, cold, cut into bits