Kielbasa Au Gratin Casserole

Indulge in pure comfort food bliss with this hearty Kielbasa Au Gratin Casserole, a mouthwatering combination of smoky kielbasa sausage, tender layers of thinly sliced russet potatoes, and a luscious cheese sauce made with sharp cheddar and Parmesan. This layered casserole is topped with golden, crispy panko breadcrumbs for a delightful crunch in every bite. Perfect for family dinners or potluck gatherings, this easy-to-prepare dish offers rich, savory flavors and a creamy, satisfying texture. Ready in just over an hour, it’s a one-pan wonder that pairs beautifully with fresh greens or a crisp side salad. Discover the ultimate in cheesy, baked comfort food with this irresistible kielbasa recipe!

Nutriscore Rating: 58/100

Prep Time:25 mins

Cook Time:45 mins

Total Time:70 mins

Servings: 6

Ingredients

• 1 pound kielbasa sausage
• 4 medium russet potatoes
• 3 tablespoons unsalted butter
• 3 tablespoons all-purpose flour
• 2 cups whole milk
• 2 cups sharp cheddar cheese, shredded
• 1 cup Parmesan cheese, grated
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1 teaspoon salt
• 0.5 teaspoon black pepper
• 0.5 cup panko breadcrumbs
• 1 tablespoon olive oil
• 2 tablespoons fresh parsley, chopped (optional)

Directions

Step 1

Preheat your oven to 375°F (190°C) and grease a 9x13-inch baking dish.

Step 2

Peel and slice the potatoes into thin rounds, about 1/8-inch thick. Set aside in a bowl of cold water to prevent browning.

Step 3

Slice the kielbasa sausage into 1/4-inch thick rounds and set aside.

Step 4

In a medium saucepan, melt the butter over medium heat. Whisk in the flour and cook for 1-2 minutes, stirring constantly, to create a roux.

Step 5

Slowly pour in the milk, whisking constantly to prevent lumps. Continue stirring until the mixture thickens, about 3-5 minutes.

Step 6

Reduce the heat to low, then stir in the cheddar cheese, Parmesan cheese, garlic powder, onion powder, salt, and black pepper until the cheese is completely melted and the sauce is smooth.

Step 7

Drain and pat the potato slices dry. Layer half of the potatoes evenly in the prepared baking dish. Top with half of the sliced kielbasa, then pour half of the cheese sauce over the top.

Step 8

Repeat the layers with the remaining potatoes, kielbasa, and cheese sauce.

Step 9

In a small bowl, mix the panko breadcrumbs and olive oil until evenly combined. Sprinkle the breadcrumb mixture evenly over the casserole.

Step 10

Cover the dish with aluminum foil and bake in the preheated oven for 30 minutes.

Step 11

Remove the foil and bake for an additional 15 minutes, or until the top is golden brown and the potatoes are tender when pierced with a fork.

Step 12

Let the casserole rest for 5-10 minutes before serving. Garnish with chopped parsley, if desired.

Nutrition Facts

Serving size	(2056.7g)

Amount per serving	% Daily Value*
Calories	3871.3

Total Fat 258.9g	0%
Saturated Fat 133.7g	0%
Polyunsaturated Fat 1.9g
Cholesterol 685.0mg	0%
Sodium 8824.2mg	0%
Total Carbohydrate 229.8g	0%
Dietary Fiber 14.5g	0%
Total Sugars 38.7g
Protein 168.5g	0%

Vitamin D 262.7IU	0%
Calcium 3335.4mg	0%
Iron 17.8mg	0%
Potassium 5876.3mg	0%

*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.

Source of Calories

Fat: 59.4%

Protein: 17.2%

Carbs: 23.4%