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A close-up shot of Kielbasa Potato Casserole showing the thick creamy sauce, seared sausage edges, and fresh parsley garnish.

Kielbasa Potato Casserole: The Ultimate Cheesy Comfort Food

This Kielbasa Potato Casserole features seared smoked sausage, tender Yukon Gold potatoes, and a velvety homemade cheese sauce, all baked under a bubbling golden cheddar crust for the ultimate comfort meal.
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Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings: 6 people
Course: Dinner, Main Course
Cuisine: American, Polish-American
Calories: 540
Ingredients Equipment Method Notes

Ingredients
  

Casserole Components
  • 1.25 lbs (565g) Kielbasa Sausage sliced into 1/2-inch coins
  • 2.5 lbs (1.1kg) Yukon Gold Potatoes peeled and cubed
  • 3 cups (340g) Sharp Cheddar Cheese freshly grated
  • 4 tbsp (60g) Unsalted Butter
  • 1/4 cup (30g) All-Purpose Flour
  • 2.5 cups (600ml) Whole Milk room temperature
  • 1/2 cup (120ml) Heavy Cream
  • 1 tsp (5g) Garlic Powder
  • 1 tsp (5g) Onion Powder
  • 1/4 cup Fresh Parsley chopped for garnish

Equipment

  • 1 Rectangular white ceramic baking dish 9x13 inch preferred
  • 1 Large Skillet For searing sausage
  • 1 Medium Saucepan For the cheese sauce

Method
 

Preparation
  1. Heat oil in a skillet and sear the kielbasa coins until the edges are dark and caramelized with a juicy pink interior.
  2. Boil cubed potatoes in salted water for 8-10 minutes until just tender. Drain and set aside.
  3. Melt butter, whisk in flour, and gradually add milk and cream. Stir in half the cheddar cheese until a thick creamy pale yellow sauce forms.
  4. Combine potatoes, sausage, and sauce in a ceramic dish. Top with remaining cheese. Bake at 375°F (190°C) for 25-30 minutes until bubbling and golden-brown spots appear.

Notes

Use Yukon Gold potatoes for the best texture as they hold their shape during baking.
Freshly grate your cheddar cheese for the smoothest, most Pinterest-worthy cheese pull.