Sausage Potato Casserole
Creamy, hearty, and packed with layers of flavor, this Sausage Potato Casserole is the ultimate comfort food for busy weeknights or cozy gatherings. Tender slices of russet potatoes are layered with savory ground Italian sausage and smothered in a rich, cheesy sauce made from scratch. A hint of garlic and sautéed onions elevate the dish, while a golden topping of melted cheddar cheese adds the perfect finishing touch. Baked to bubbly perfection in under an hour, this crowd-pleasing casserole is easy to prepare and features simple, pantry-friendly ingredients. Serve it as a stand-alone meal or pair it with a fresh green salad for a balanced dinner that everyone will love. Perfect for meal prepping, leftovers reheat beautifully, ensuring you can enjoy its comforting flavors throughout the week.
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Recipe Information
Ingredients
- 4 large Russet potatoes
- 1 pound Ground Italian sausage
- 3 tablespoons Butter
- 3 tablespoons All-purpose flour
- 2.5 cups Whole milk
- 2 cups Shredded cheddar cheese
- 1 teaspoon Salt
- 0.5 teaspoon Ground black pepper
- 0.5 teaspoon Garlic powder
- 1 medium Onion, diced
- 2 tablespoons Fresh parsley, chopped (optional)
- 1 as needed Cooking spray or butter (for greasing)
Instructions
Preheat your oven to 375°F (190°C) and grease a 9x13-inch casserole dish with cooking spray or butter.
Peel the potatoes and slice them into 1/8-inch-thick rounds. Set them aside in a bowl of cold water to prevent browning.
In a large skillet over medium heat, cook the ground Italian sausage until browned and fully cooked. Use a spatula to break it into crumbles as it cooks. Remove the sausage from the skillet and set aside.
In the same skillet, melt the butter over medium heat. Add the diced onion and sauté until softened, about 3-4 minutes.
Whisk in the flour and cook for 1 minute to create a roux. Gradually pour in the milk, whisking continuously to avoid lumps. Cook the mixture for 2-3 minutes, or until it thickens slightly.
Stir in 1 1/2 cups of the shredded cheddar cheese, salt, black pepper, and garlic powder. Continue stirring until the cheese is melted and the sauce is smooth.
Drain and pat dry the potato slices. Layer half of the potatoes evenly in the bottom of the prepared casserole dish.
Top the potato layer with half of the cooked sausage and then pour half of the cheese sauce over the sausage. Repeat with the remaining potatoes, sausage, and cheese sauce, creating two full layers.
Sprinkle the remaining 1/2 cup of shredded cheddar cheese evenly over the top of the casserole.
Cover the dish tightly with aluminum foil and bake in the preheated oven for 40 minutes.
Remove the foil and bake for an additional 20 minutes, or until the potatoes are tender and the top is golden and bubbly.
Take the casserole out of the oven and let it rest for 5-10 minutes before serving. Garnish with fresh parsley if desired.
Nutrition Facts
Calories |
4218 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 242.4 g | 311% | |
| Saturated Fat | 120.2 g | 601% | |
| Polyunsaturated Fat | 1.7 g | ||
| Cholesterol | 736 mg | 245% | |
| Sodium | 7822 mg | 340% | |
| Total Carbohydrate | 337.1 g | 123% | |
| Dietary Fiber | 23.6 g | 84% | |
| Total Sugars | 47.8 g | ||
| Protein | 184.3 g | 369% | |
| Vitamin D | 6.9 mcg | 34% | |
| Calcium | 2741 mg | 211% | |
| Iron | 21.2 mg | 118% | |
| Potassium | 9170 mg | 195% | |
*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.
