Peel 1 ½ pounds russet potatoes. Grate the potatoes and ½ yellow onion on the large holes of a box grater. Place together on a clean kitchen towel, pull up the sides of the towel to form a bundle, and squeeze out excess moisture.
Transfer the potato mixture to a large bowl. Add 2 large eggs, ¼ cup matzo meal, 2 teaspoons kosher salt, and ½ teaspoon black pepper, and stir to combine.
Preheat an Instant Vortex Plus 7-in-1 Air Fryer Oven to 375ºF and set to 16 minutes. Coat the air fryer racks with cooking spray. Drop the latke mixture in 2-tablespoon dollops into the air fryer, flattening the tops to make a patty. Spray the tops of the latkes with cooking spray. Air fry, rotating the trays halfway through, for 8 minutes total. Repeat with the remaining latke mixture. Serve with sour cream and applesauce.
