For the dough

• 1 1/4 cups all-purpose flour
• 2 teaspoons baking powder
• 1/4 teaspoon salt
• 1/4 cup milk, at room temperature
• 1/4 cup plain yogurt, at room temperature
• 1/4 cup granulated sugar
• 3 tablespoons butter, melted

For frying

• vegetable oil, about 2 inches deep in a medium pot

For the coating

• 2/3 cup granulated sugar
• 1 1/2 to 2 teaspoons ground cinnamon

For the filling

• 1 box (3.4 ounces) instant vanilla pudding mix, prepared with cold milk as the package directs
• 4 ounces white chocolate, melted