Ham Onion and Potato Casserole
Discover cozy, comfort-food perfection with this Ham Onion and Potato Casserole—a hearty, savory dish that brings together layers of tender russet potatoes, smoky cooked ham, and sweet caramelized onions, all smothered in a rich, creamy cheddar cheese sauce. This crowd-pleasing casserole is baked to golden, bubbly perfection, making it an irresistibly satisfying dinner for any night of the week. With simple ingredients and just 20 minutes of prep, this easy-to-follow recipe combines texture and flavor in every bite, perfect for family gatherings or meal prep. Garnished with fresh parsley for a vibrant finish, this casserole pairs beautifully with a crisp green salad or buttery dinner rolls.
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Recipe Information
Ingredients
- 4 medium-sized russet potatoes
- 2 cups cooked ham
- 1 large yellow onion
- 2 cups shredded cheddar cheese
- 1.5 cups milk
- 3 tablespoons unsalted butter
- 2 tablespoons all-purpose flour
- 1 teaspoon garlic powder
- 1 teaspoon salt
- 0.5 teaspoon ground black pepper
- 2 tablespoons parsley
- 2 tablespoons olive oil
Instructions
Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish with cooking spray or butter.
Peel the potatoes and slice them into thin rounds, approximately 1/8-inch thick. Set them aside in a bowl of cold water to prevent browning.
Dice the cooked ham into small, bite-sized pieces. Set aside.
Slice the yellow onion thinly. In a skillet, heat the olive oil over medium heat. Add the onion slices and cook for 7-8 minutes, stirring occasionally, until they are softened and lightly caramelized. Set aside.
In a medium saucepan, melt the butter over medium heat. Once melted, whisk in the flour and cook for 1 minute to form a roux.
Slowly pour in the milk while continuously whisking to avoid lumps. Cook for 3-4 minutes, or until the sauce thickens slightly.
Stir the garlic powder, salt, black pepper, and half of the shredded cheddar cheese (1 cup) into the sauce. Mix until the cheese is fully melted and the sauce is smooth. Remove from heat.
Drain the potatoes and pat them dry with a clean kitchen towel. Begin layering the casserole: start with a single layer of potato slices on the bottom of the prepared baking dish.
Top the potato layer with a portion of the ham, caramelized onions, and a drizzle of the cheese sauce. Repeat the layers until all ingredients are used, finishing with a layer of cheese sauce on top.
Sprinkle the remaining cheddar cheese (1 cup) evenly over the casserole.
Cover the baking dish with aluminum foil and bake in the preheated oven for 40 minutes. Then, remove the foil and bake for an additional 20 minutes, or until the top is golden and bubbly and the potatoes are tender.
Remove the casserole from the oven and let it rest for 5-10 minutes before serving. Garnish with freshly chopped parsley for added flavor and presentation.
Nutrition Facts
Calories |
3129 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 170.0 g | 218% | |
| Saturated Fat | 86.9 g | 435% | |
| Polyunsaturated Fat | 2.9 g | ||
| Cholesterol | 654 mg | 218% | |
| Sodium | 10261 mg | 446% | |
| Total Carbohydrate | 212.1 g | 77% | |
| Dietary Fiber | 15.8 g | 56% | |
| Total Sugars | 32.4 g | ||
| Protein | 200.6 g | 401% | |
| Vitamin D | 4.0 mcg | 20% | |
| Calcium | 2277 mg | 175% | |
| Iron | 13.9 mg | 77% | |
| Potassium | 6202 mg | 132% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
