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This creamy kielbasa potato soup is a one-pot, weeknight-friendly comfort food made with browned smoked Polish sausage, tender Yukon Gold potatoes, carrots, celery, and a mustard cream broth. Make it on the stovetop, in an Instant Pot, or in a Slow Cooker.
Creamy Kielbasa Potato Soup: Polish Comfort Food in One Pot
Kielbasa (kiełbasa) is Poland's smoked garlic sausage, and pairing it with potatoes is about as Polish as cooking gets. The traditional version of this soup is called kartoflanka, a humble potato soup thickened with a flour roux (zasmażka) and seasoned with bay leaf, marjoram, and whatever root vegetables are on hand.
My version sticks pretty close to that method. I brown the sausage first for flavor, cook the vegetables in the rendered fat, make a real roux instead of dumping in cornstarch at the end, and mash a few potatoes right in the pot instead of blending the soup smooth.
Polish cooks usually stir in sour cream (śmietana), but I use heavy cream and a tablespoon of whole-grain mustard. Mustard is what you serve alongside kielbasa in Poland anyway, so stirring it into the soup felt like a natural move rather than a departure. It cuts the richness and gives the broth a gentle tang that keeps a creamy potato soup from tasting flat.
You'll love this Kielbasa Potato Soup because it's simple, budget-friendly, one-pot, and deeply satisfying. It reheats beautifully, making it perfect for meal prep and next-day lunches, just like my creamy chicken enchilada soup or my one-pot chicken tortilla soup.
Serve this smoked sausage potato soup with something to mop up the bowl. I like thick slices of crusty homemade bread-machine bread, warm garlic-butter dinner rolls, or my amazing seeded rye bread.
Recipe Highlights
- One pot, start to finish. Everything happens in a single Dutch oven: browning the sausage, softening the vegetables, simmering the potatoes. Cleanup is one pot and a cutting board. If you like cooking this way, you'll also like my creamy sausage tortellini soup and my vegetable beef soup.
- Creamy without a blender. I mash some of the potatoes against the side of the pot with a potato masher. The potato starch thickens the broth naturally while plenty of chunks stay whole, so the soup is creamy and still hearty.
- No fancy shopping. Smoked kielbasa, potatoes, carrots, celery, onion, stock, and a little cream. I'm willing to bet most of that is in your kitchen right now.
- Whole grain mustard. I use only one tablespoon. You will not taste mustard. You will taste a small, sharp note that cuts through the cream and the smoked fat, the same way a squeeze of lemon works in my Tuscan White Bean Soup.
- Great for cold nights and casual company. Serve it with crusty bread or my garlic butter dinner rolls, and you've got a full meal. It reheats well, so it's great for busy weeknights.
Ingredients and Substitutions
- Kielbasa. I used 14 oz of smoked Polish kielbasa, sliced into ¼-inch rounds. Look for it in the refrigerated case near the hot dogs, usually sold in a U-shaped ring. Any smoked sausage works here: andouille if you want heat, smoked turkey kielbasa for a leaner version, or plain smoked beef sausage.
- Yukon Gold potatoes: I recommend Yukon Gold, red, or yellow potatoes. They hold their shape in the broth but still break down enough when mashed to thicken things. Red potatoes work too. I don't use russets here because they're too starchy and fall apart.
- Butter and high-smoke-point olive oil. The oil browns the sausage over higher heat; then you add the butter afterward for the vegetables. Using both means you get color without burning.
- Onion, celery, and carrots. The standard base. Dice everything about the same size so it softens evenly.
- Paprika: Regular sweet paprika keeps it mild. Smoked paprika doubles down on the smoky sausage flavor, which I love in the fall.
- Flour. All-purpose flour, 2 tablespoons, stirred into the vegetables to thicken the broth. For a gluten-free version, use GF flour, or skip it and mash a few more potatoes instead.
- Chicken stock. Use the most flavorful stock you can find, since it's the base of the soup. Vegetable stock works too.
- Bay leaf: One leaf during the simmer. Remember to fish it out before you mash the potatoes
- Heavy cream: Half a cup is enough for a creamy, not heavy, soup. Half-and-half gives you a lighter version, and full-fat coconut milk works for dairy-free.
- Whole-grain mustard: My favorite addition. Dijon works if that's what you have, though you'll lose the little seed pops.
- Salt, black pepper, and chili flakes: Season at the end, after the cream goes in. Smoked sausage and stock are both salty, so taste first.
Cooking Tips
- Give the sausage room. Brown it in a single layer. Crowded sausage steams instead of searing, and that browned crust is most of the flavor in this soup.
- Save some sausage for the top. The slices you put back in the pot soften as they sit. The reserved ones stay crisp at the edges, and I add them at the end as a topping.
- Keep the heat low after the cream goes in. A gentle simmer sits around 185°F (85°C). Anything hotter risks the cream separating.
- Season last, not first. Kielbasa and stock both bring salt. Taste before you reach for the salt shaker.
- Cut the potatoes small. Bite-sized cubes, roughly ¾ inch, cook in about 15 minutes and mash easily.
How to Serve It
Ladle the soup into bowls and top each serving with the reserved browned kielbasa slices, freshly chopped parsley, and a generous grind of black pepper.
Serve kielbasa potato soup hot with thick slices of rustic, crusty bread for dipping. My garlic butter dinner rolls and my bacon and cheddar cheese scones are both excellent here, and if you bake your own, this bread machine white bread is a good one.
To lighten the meal, add a simple salad on the side, like my apple spinach salad or my tomato cucumber bacon lettuce salad.
Variations
- Add greens or beans: Stir in 2 cups of spinach or chopped kale during the last few minutes, or add a drained can of white beans with the potatoes.
- Cheesy version: Stir in 1 cup of shredded sharp cheddar or Gruyère off the heat, right after the cream.
- Traditional Polish finish: Swap the heavy cream for ½ cup of full-fat sour cream, tempered with a ladle of hot broth first, and use dried marjoram in place of the dried parsley.
- Spicier: Increase the chili flakes, use hot paprika, or choose a spicier smoked sausage.
Creamy Kielbasa Potato Soup (One Pot)
Ingredients
Soup
- 14 oz smoked kielbasa (400 g) sliced into ¼-inch rounds
- 2 tablespoons butter
- 1 tablespoon olive oil use high-smoke-point olive oil or canola
- 1 medium yellow onion diced
- 2 medium celery stalks diced
- 2 medium carrots diced
- 3 cloves garlic minced
- 1 teaspoon paprika
- 1 teaspoon dried parsley
- 2 tablespoons all-purpose flour
- 5 cups chicken stock (1.2 L)
- 1 lb Yukon Gold potatoes (450 g) peeled and cut into bite-sized cubes
- 1 large bay leaf
- ½ cup heavy cream (120 ml)
- 1 tablespoon whole-grain mustard
- Salt to taste
- freshly ground black pepper
- chili flakes
- chopped fresh parsley for garnish
Instructions
- Brown the kielbasa. Heat the olive oil in a large Dutch oven over medium-high heat. Add the sliced kielbasa and cook for 5 to 6 minutes, turning occasionally, until browned and lightly caramelized. Transfer to a plate and reserve a small portion for garnish.
- Cook the vegetables. Reduce the heat to medium and add the butter. Add the onion, celery, and carrots and cook for 6 to 7 minutes until softened. Stir in the garlic, paprika, and dried parsley and cook one more minute, until fragrant.
- Make the base. Sprinkle the flour over the vegetables and stir continuously for about 1 minute. Gradually whisk in the chicken stock until smooth. Add the potatoes and bay leaf. Bring to a gentle boil, then reduce the heat and simmer for 15 to 18 minutes, until the potatoes are fork-tender.
- Thicken the soup. Remove the bay leaf. Using a potato masher, gently mash some of the potatoes directly in the pot, leaving plenty of chunks intact. This creates a naturally creamy texture while keeping the soup hearty.
- Assemble. Return the browned kielbasa to the pot (don't use the reserved slices). Stir in the heavy cream and whole-grain mustard. Cook over low heat for 2 to 3 minutes, until heated through, about 185°F (85°C). Taste and season with salt, freshly ground black pepper, and chili flakes.
- Serve. Ladle into bowls. Top each serving with the reserved browned kielbasa, chopped fresh parsley, and a generous sprinkle of cracked black pepper. Serve hot with slices of rustic crusty bread on the side for dipping.
Notes
- I provide step-by-step photos below this recipe card if you need a visual guide.
- Kielbasa: Use smoked kielbasa, not fresh Polish sausage. Andouille, smoked turkey kielbasa, or smoked beef sausage all work.
- Potatoes: Yukon Gold, red, or yellow potatoes hold their shape and mash into a silky texture. I don't recommend russets, which are too starchy and break down.
- Season at the very end: Smoked sausage and chicken stock are both salty. Taste after you add the cream, then adjust.
- Gluten-free: Skip the flour and mash a few extra potatoes to thicken.
- Dairy-free: Swap the butter for olive oil and the heavy cream for full-fat canned coconut milk.
- How do I make it thicker? Mash more potatoes. That is the simplest fix. You can also stir in a slurry of 1 tablespoon cornstarch whisked with 2 tablespoons cold water, then simmer for 2 minutes.
- Why did my soup separate? The cream was too hot. Heavy cream can break if you boil it, especially in a soup with mustard. Keep the pot below a simmer once you add the cream.
- Storage: Refrigerate up to 4 days. Reheat over medium-low heat so the cream doesn't separate. The soup thickens as it chills, so add a splash of stock when you reheat.
- Freezing: Freeze without the cream and stir it in after reheating. Portion the soup into zip-top bags, press out the air, and freeze them flat on a sheet pan. Once solid, they stack like files, which saves a shocking amount of freezer space.
How to Make It in a Slow Cooker:
- Brown the kielbasa and sauté the vegetables in a skillet first. Remove the kielbasa to a plate.
- Slow Cook: Transfer everything except the browned kielbasa slices, cream, and mustard to the slow cooker with the stock, potatoes, and bay leaf. Cook on LOW for 5 to 6 hours or HIGH for 3 hours.
- Add the remaining ingredients: Remove the bay leaf. Mash some potatoes, then stir in the cream, mustard, and ⅔ of the kielbasa slices during the last 20 minutes.
- When serving, garnish with the reserved ⅓ of kielbasa slices.
How to Make It in an Instant Pot:
- Brown the kielbasa on Sauté, remove and reserve.
- Cook the vegetables and stir in the flour on Sauté.
- Turn Sauté off, whisk in the stock, and scrape the bottom clean to avoid a burn notice.
- Pressure cook: Add the potatoes and bay leaf, seal, and pressure cook on HIGH for 5 minutes with a quick release.
- Add the remaining ingredients: Remove the bay leaf, mash some of the potatoes, then stir in ⅔ of the kielbasa slices, cream, and mustard with the pot on Keep Warm.
- When serving, garnish with the reserved ⅓ of kielbasa slices.
Nutrition
Nutrition Disclaimer:
The nutritional information on this website is only an estimate and is provided for convenience and as a courtesy only. The accuracy of the nutritional information for any recipe on this site is not guaranteed. It should not be used as a substitute for a professional nutritionist's advice.
How to Make Kielbasa Potato Soup (Step-by-Step Photos)
This recipe overview includes helpful tips and process shots. Scroll up for the complete instructions and ingredient amounts in the recipe card above.
- Brown the kielbasa: Cook the sliced sausage in olive oil over medium-high heat for 5 to 6 minutes, until the edges brown and caramelize. Remove to a plate and set a few slices aside for the garnish.
- Cook the vegetables: Lower the heat, add the butter, and cook the onion, celery, and carrots for 6-7 minutes, until softened. Stir in the garlic, paprika, and dried parsley, and cook for one more minute.
- Add the flour and stock: Sprinkle the flour over the vegetables and stir for about a minute. Gradually whisk in the chicken stock to keep the broth smooth.
- Simmer the potatoes: Add the cubed potatoes and bay leaf. Simmer gently for 15 to 18 minutes, until the potatoes are fork-tender.
- Mash some of the potatoes to thicken the soup: Remove the bay leaf. Mash some of the potatoes right in the pot with a potato masher, leaving plenty of chunks whole. This is what makes the soup creamy.
- Finish and season: Return the browned kielbasa, stir in the heavy cream and whole-grain mustard, and warm through over low heat for 2 to 3 minutes. Season with salt, pepper, and chili flakes.
More Soup Recipes
- Italian Sausage Potato Soup
- Tuscan White Bean Soup with Sausage and Kale
- Creamy Sausage Tortellini Soup
- Chicken Gnocchi Soup
- Vegetable Beef Soup
- Sausage White Bean Soup
- One-Pot Chicken Tortilla Soup
- Italian Sausage Orzo Soup with Mushrooms and Spinach
- Creamy Butternut Squash, Sausage, and Orzo Soup
- Creamy Chicken and Wild Rice Soup with Mushrooms
If you try my Kielbasa Potato Soup, have questions, or just want to say hi, I would love to hear your feedback in the comments below. Julia.
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