Creamy, cheesy, and irresistibly comforting, Easy Potato Onion Supreme is the ultimate side dish that elevates simple ingredients into a masterpiece. Featuring golden caramelized onions layered between velvety slices of potato, this indulgent casserole is baked to perfection in a rich bath of heavy cream and melted cheddar cheese. Garlic powder, salt, and black pepper add subtle seasoning, while a fresh parsley garnish brings a pop of color and flavor to every bite. With just 20 minutes of prep and effortless layering, this crowd-pleasing recipe is an ideal choice for holiday spreads, potlucks, or Sunday dinners. Whether you're looking for a decadent potato bake or a cheesy onion casserole, this dish serves up hearty flavor in every forkful.
Preheat your oven to 375°F (190°C).
Peel the potatoes and slice them thinly, about 1/8 inch thick. Use a mandoline slicer if available for consistent thickness.
Peel and slice the onions into thin rings.
In a large skillet over medium heat, melt 2 tablespoons of butter. Add the sliced onions and cook, stirring frequently, until they caramelize and turn golden brown, about 10-12 minutes. Set aside.
Grease a 9x13-inch baking dish with 1 tablespoon of butter.
Layer half of the potato slices evenly in the baking dish. Sprinkle with half the salt, half the pepper, and half the garlic powder.
Top the potatoes with half of the caramelized onions and 1/2 cup of shredded cheddar cheese.
Repeat the layering process with the remaining potatoes, seasonings, onions, and 1/2 cup shredded cheddar cheese.
Pour the heavy cream evenly over the entire dish.
Cover the baking dish with aluminum foil and bake in the preheated oven for 30 minutes.
Remove the foil, sprinkle the remaining 1/2 cup of shredded cheddar cheese on top, and bake for an additional 10 minutes or until the cheese is bubbly and golden.
Remove from the oven and let the dish cool for 5 minutes. Garnish with freshly chopped parsley before serving.
Serving size | 1994.5 grams (1994.5g) |
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Amount per serving | % Daily Value* |
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Calories | 3138 |
Total Fat 182.50g | 234% |
Saturated Fat 110.40g | 552% |
Polyunsaturated Fat 1.40g | |
Cholesterol 553mg | 184% |
Sodium 3966mg | 172% |
Total Carbohydrate 292.40g | 106% |
Dietary Fiber 32.80g | 117% |
Total Sugars 27.60g | |
Protein 77.30g | 155% |
Vitamin D 9IU | 45% |
Calcium 1519mg | 117% |
Iron 15mg | 84% |
Potassium 7085mg | 151% |
Source of Calories