Creamy, cheesy funeral potatoes topped with a crunchy cornflake crust are a beloved vegetarian family side dish. This Utah-born comfort food classic shows up at potlucks, holidays, and gatherings across the country.
Preheat oven to 350°F (175°C). Lightly grease a 9x13-inch baking dish.
In a large skillet over medium heat, melt 1/4 cup butter. Add diced onion and sauté until translucent, about 4 minutes; remove from heat.
In a large bowl, combine the thawed hash brown potatoes, sautéed onions, sour cream, cream of mushroom soup, shredded cheddar cheese, salt, black pepper, and paprika. Mix thoroughly to ensure even coating.
Spread the potato mixture evenly into the prepared baking dish. In a separate bowl, combine the crushed cornflakes with melted 1/4 cup butter for the topping. Sprinkle evenly over the potato mixture.
Bake uncovered for 45–50 minutes, or until the edges are bubbling and the top is golden and crisp. Rest 10 minutes before serving to allow the dish to set for clean scooping.