01 - Combine cinnamon, nutmeg, ginger, cloves, and allspice in a small bowl. Set aside for multiple uses.
02 - Mix granulated sugar with 2 teaspoons of the prepared pumpkin spice blend in a wide, shallow bowl.
03 - Separate biscuit dough into individual pieces. Use a 1-inch round cutter or bottle cap to punch out center holes, creating donut shapes. Reserve cutouts for donut holes.
04 - Pour vegetable oil into a large, heavy-bottomed pot. Heat to 350°F, maintaining steady temperature for even cooking.
05 - Carefully lower 3-4 donuts into hot oil. Fry for 1-2 minutes per side until deep golden brown. Cook donut holes for approximately 1 minute total.
06 - Remove fried donuts using a slotted spoon. Transfer to paper towel-lined tray to drain briefly.
07 - Toss warm donuts immediately in spiced sugar mixture, ensuring even coverage on all surfaces.
08 - Whisk powdered sugar, milk, vanilla extract, and 1/2 teaspoon pumpkin spice until smooth. Drizzle over cooled donuts or dip tops for added sweetness.