Crumb Cake Donuts

Ingredients

• 1/3 cup brown sugar
• 1/3 cup granulated sugar
• 1 1/2 teaspoons ground cinnamon
• 1/2 cup unsalted butter, melted
• 1 cup + 2 Tablespoons all-purpose flour
• 2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 3/4 teaspoon salt
• 1/4 teaspoon ground nutmeg
• 2 large eggs, at room temperature
• 2/3 cup packed brown sugar
• 1/2 cup milk
• 1/2 cup plain yogurt or sour cream
• 2 teaspoons pure vanilla extract
• confectioners sugar