Pumpkin Doughnuts With Powdered Sugar Glaze and Spiced Sugar Doughnut Holes

Name: Pumpkin Doughnuts With Powdered Sugar Glaze and Spiced Sugar Doughnut Holes
Ingredients: 1 cup sugar; 4 teaspoons ground cinnamon; 2 teaspoons ground nutmeg; 3 1/2 cups all purpose flour; 4 teaspoons baking powder; 1 teaspoon salt; 1 teaspoon ground cinnamon; 1 /2 teaspoon ground ginger; 1 /2 teaspoon baking soda; 1 /4 teaspoon ground nutmeg; 1 /8 teaspoon ground cloves; 3 tablespoons unsalted butter, room temperature; 1 large egg; 2 large egg yolks; 1 teaspoon vanilla extract; 1 /2 cup plus 1 tablespoon buttermilk; 1 cup canned pure pumpkin; Canola oil (for deep-frying); 2 cups powdered sugar; whipping cream