Creamy, comforting Slow Cooker Potato Soup made with leeks, celery and potatoes. Perfectly smooth, easy to make and ready in just over 4 hours.
This Slow Cooker Potato Soup is the ultimate comfort food; creamy, rich and packed with flavour from leeks, celery and a hint of herbs.
It's simple to prep, makes a warming meal for the whole family and can be customized with toppings like crispy bacon, cheese or fresh herbs. Perfect for busy days or a cozy night in.
For more cozy soups, try my Butternut Squash Soup, my Roasted Cauliflower Soup and this Slow Cooker Wedding Soup.
Ingredients
The ingredient list is really basic and wholesome:
- Butter and olive oil: The classic combo adds flavour and prevents the leeks, onions and celery from sticking.
- Onion: Adds sweetness and depth. Chop finely for smooth blending later.
- Leeks: Fora subtle oniony flavour; wash thoroughly to remove grit.
- Celery: Adds aromatic crunch and balances the creamy potatoes.
- Potatoes: Starchy potatoes like Russets or Yukon Golds work best for creamy soup. Cut into uniform cubes for even cooking.
- Dried Italian herbs: Provide gentle herbaceous warmth. You can also use thyme or rosemary.
- Stock: Vegetable or chicken stock forms the soup's flavour base. Homemade or low-sodium is best.
- Milk and heavy cream: Create a silky texture and rich taste. Use dairy free alternatives if needed.
- Salt and pepper: Seasoning is super important.
See recipe card for quantities.
Instructions
Follow my easy steps for this set and forget soup:
- Step 1: Melt butter and olive oil in a pan, then sauté onion, leeks and celery for 4 to 5 minutes until soft.
- Step 2: Transfer veggies to the slow cooker, add potatoes, herbs, stock, salt and pepper.
- Step 3: Cook on high 4 to 5 hours (or low 6 to 8) until potatoes are tender.
- Step 4: Add the cream.
- Step 5: Adjust seasoning .
- Step 6: Add the soup to a blender jug.
- Step 7: Blend until smooth.
- Step 7: Adjust seasoning and serve with optional toppings like bacon, cheese, extra cream and fresh herbs.
Substitutions
- Potatoes: Use sweet potatoes for a slightly sweeter, nutrient-rich twist.
- Heavy cream: I find coconut cream makes the soup dairy-free and subtly tropical.
- Stock: Use water and bouillon cubes as a quick alternative if you don't have stock on hand.
Variations
- Cheesy potato soup: Stir in grated cheddar or Parmesan before serving.
- Loaded soup:Top with crispy bacon, chives and a drizzle of cream for a baked potato-style version.
- Vegan potato soup: Use olive oil instead of butter, vegetable stock and coconut or oat cream.
Equipment
Slow cooker, non-stick frying pan, blender (or immersion blender), chopping board, knife and measuring spoons/cups.
Storage
Store in an airtight container in the fridge for up to 3 days or freeze for up to 2 months.
Top tip
For extra creamy soup, let it cool slightly before blending, then return to the slow cooker to reheat; it prevents over-thinning.
FAQ
Yes! It keeps well in the fridge for up to 3 days or can be frozen for up to 2 months.
Related
Looking for other recipes like this? Try these:
Slow Cooker Potato Soup
Ingredients
- 2 tablespoon butter
- 1 tablespoon olive oil
- 1 small onion chopped (70g / 2.5oz)
- 2 medium leeks washed and sliced (500g / 17.6oz)
- 2 ribs celery diced
- 3 potatoes peeled and cut into 2cm cubes (400g / 14oz)
- ½ teaspoon dried Italian herbs
- 1 litre vegetable or chicken stock
- ¼ cup milk
- ¼ cup heavy cream
- 1 teaspoon salt
- ½ teaspoon black pepper
To serve
- Cooked bacon chopped
- Parmesan or cheddar
- Drizzle of cream and olive oil
- Parsley or chives
Instructions
- Melt the butter and olive oil in a non-stick frying pan over medium heat, then sauté the onion, leeks, and celery for 4-5 minutes until softened.
- Transfer the sautéed vegetables to the slow cooker and add the potatoes, dried herbs, stock, salt, and pepper, stirring to combine.
- Cover and cook on high for 4-5 hours or low for 6-8 hours, until the potatoes are tender. Blend the soup until smooth using a blender or immersion blender, then stir in the milk and cream until the consistency is to your liking.
- Adjust seasoning to taste. Serve with optional toppings such as bacon, cheese, a drizzle of cream or olive oil, and a sprinkle of parsley or chives.
Nutrition
Nutrition Disclaimer
All nutritional information provided is an estimate. For specific dietary needs or concerns, we recommend consulting a nutrition calculator or a qualified expert.
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