This incredibly easy Classic 3-Ingredient Pumpkin Spice Cake comes together with just a can of pumpkin puree, a box of spice cake mix, and water, delivering a moist and flavorful treat perfect for any occasion.
Ensure you use pumpkin puree, not pumpkin pie filling. For a richer cake, substitute milk for water. Be careful not to overmix the batter; a few lumps are fine.