Skip to content

French-American

Slow Cooker Potato Leek Soup

Potatoes and leeks soften into a mild, creamy soup without heavy cream. A quick blend at the end makes it smooth while still tasting like real vegetables.

Prep
20 min
Cook
6 hr
Total
6 hr 20 min
Servings
6
Difficulty
Easy
Jump to recipe
Creamy potato leek soup in a bowl with cracked pepper

Photo: Vegan Feast Catering (CC BY). Source

Why you’ll love it

  • Leeks give oniony sweetness without harsh bite.
  • Blending part of the pot thickens without flour.
  • Uses pantry staples and keeps cost low.
  • Works as a starter or a full meal with bread.

Ingredients

Servings6

Ingredient amounts scale. Oven temperature and cook time do not. Salt, spices, and leaveners are a starting point after you scale. Taste and adjust.

View list

Check the ingredients you still need, then add them. If nothing is checked, the full list is added. Saved on this device.

Instructions

  1. 1

    Rinse sliced leeks thoroughly to remove grit, then drain.

  2. 2

    Add potatoes, leeks, garlic, broth, butter, salt, pepper, and bay leaf to the slow cooker.

  3. 3

    Cover and cook on low for 6 hours until potatoes mash easily.

  4. 4

    Remove bay leaf.

  5. 5

    Blend soup with an immersion blender until mostly smooth, leaving a few chunks if preferred.

  6. 6

    Stir in milk, taste for salt, and heat on high 10 minutes.

  7. 7

    Ladle into bowls and top with chives.

Pro tips

  • Only use white and light green leek parts for best texture.
  • Yukon golds blend creamier than russets.
  • For dairy-free, swap milk with unsweetened oat milk.

Easy substitutions

whole milk
half-and-half for richer soup
butter
olive oil
vegetable broth
chicken broth if not vegetarian

Storage and reheating

Storage

Refrigerate up to 4 days; freeze without milk up to 2 months, then add milk when reheating.

Reheating

Warm on low heat, stirring often so it does not scorch.

Nutrition

Estimates per serving, using standard ingredient averages and rounded to the nearest gram. This is not a lab analysis, and it shifts if you change brands or add sides.

Calories
220
Protein
6 g
Carbs
36 g
Fat
7 g
Fiber
4 g

Budget friendly · Slow Cooker · Vegetarian

You might also like

Slow Cooker Beef Stew

Beef chuck, potatoes, and carrots cook in a thyme broth until the meat is fork-tender. A spoon of flour at the start gives the gravy body without a separate pot at the end.

8 hr 20 min · Easy

View recipe

Still hungry?

More in the same lane, not a random mix.

Slow Cooker BBQ Chicken

Chicken thighs cook in a ketchup barbecue sauce you mix yourself, then shred into the sauce. There is no bottle of sauce required, and the lid stays on until the chicken hits 165°F.

5 hr 10 min · Easy

View recipe

From the kitchen

Kitchen tools we love

Practical tools these recipes actually use. This is not a review roundup, and these are not paid placements. If affiliate links are added later, they will be labeled and disclosed.

  • A heavy 12-inch skillet

    Most of the chicken and steak recipes are written for one pan that holds heat. Stainless or cast iron both work.

  • An air fryer with a real basket

    The air-fryer recipes expect a single layer. A crowded basket steams instead of browning.

  • A half-sheet pan

    Drumsticks, potatoes, sausage, and carrots all use one. A dark pan browns faster than a very shiny one.

  • A sharp chef’s knife

    These recipes do not need a specialty blade. A sharp 8-inch knife is faster and safer than a dull one.

  • A large cutting board

    Big enough that the onion and the raw chicken are not sharing the same puddle.

  • Dry cups and a liquid cup

    Desserts in particular expect level dry measures and a separate cup for milk.

  • An instant-read thermometer

    Use it for poultry, pork chops, and meatloaf. Color is a weak guide.

Read the affiliate disclosure.

Ingredients