Dump cakes are a distinctly American invention, born from the mid-20th-century love affair with convenience foods and clever shortcuts. This slow cooker 3-ingredient apple cinnamon dump cake takes that spirit and tucks it into a cozy, modern format: minimal prep, familiar pantry ingredients, and a warm, spoonable dessert that feels like apple pie’s more relaxed cousin. You simply layer everything in the slow cooker, walk away, and a few hours later you have a bubbling, cinnamon-scented dessert with a tender, cake-like topping. It’s a great option for busy weeknights, casual gatherings, or holidays when your oven is already working overtime with other dishes.