Creamy Vegetable Soup

A silky, luxurious creamy vegetable soup that's perfect for using up leftover vegetables in your fridge. Built on a base of potatoes for body, with sauteed onions and mushrooms, leeks, garlic, herbs, and whatever vegetables you have on hand. Finished with a flour-and-cream liaison for a smooth, restaurant-quality texture.

smart_display Published 2025-02-17 download Extracted 2026-05-25

20m Prep

75m Cook

1h 35m Total

6 Servings

soup vegetable creamy french comfort-food vegetarian leftover-friendly winter potato mushroom

Ingredients

1 large yellow onion (diced)
4 oz mushrooms (sliced) optional
4 cloves garlic cloves (thinly sliced)
1 whole leek (white and light green parts only, quartered lengthwise, chopped and rinsed)
1 tbsp fresh sage (chopped)
to taste fresh thyme (chopped) optional
to taste fresh rosemary (chopped) optional
handful scallions (chopped) optional
1 whole red bell pepper (chopped) optional
3 stalks celery stalks (cut small)
2 whole carrots (chopped)
2 whole baking potatoes (cut into small pieces)
1 large sweet potato (cut into small pieces)
to cover vegetable or chicken stock (enough to cover vegetables plus a little extra)
3 tbsp all-purpose flour (for thickening, sifted through strainer)
1 cup heavy cream (to finish)
as needed cornstarch (dissolved in equal parts cold water (slurry), optional extra thickener) optional
to taste salt
to taste black pepper
as needed olive oil or butter (for sauteing)

Steps

1

In a clean stockpot over medium heat, saute the diced onion and sliced mushrooms with a pinch of salt and pepper. Cook until the mushrooms release their water and the water cooks off completely — this is essential for proper mushroom texture and concentrated flavor.

Tip: Make sure your pot is clean and watch for hot spots so nothing burns. Mushrooms with leftover water make for a bad final texture.

~10 min
2

Add the sliced garlic and saute for about 1 minute — long enough to develop flavor, but do not let it brown or burn.

Tip: Sauteed garlic gives much more flavor than poached, but burned garlic ruins the soup. Watch it closely.

~1 min
3

Add the chopped leek (rinsed of any sand), fresh sage, thyme, rosemary, scallions, red bell pepper, celery, carrots, baking potatoes, and sweet potato. Stir to coat everything in the aromatic base.

Tip: Cut celery and harder vegetables small so they cook through. This is a clean-out-the-fridge soup — use whatever you have, skip what you don't.

~3 min
4

Pour in enough vegetable or chicken stock to cover the vegetables plus a little extra (the potatoes will release starch and absorb liquid).

Tip: Use a good-quality organic stock for best flavor — Chef Jean-Pierre recommends Bonafide.

~2 min
5

Bring to a simmer and cook for about 45 minutes to 1.5 hours (depending on how thick the vegetables are cut), until everything is tender. Test by pricking carrots and celery with a fork — when those are soft, the rest is done.

Tip: Carrots and celery take the longest, so use them as your doneness benchmark.

~60 min
6

Set up a strainer over the pot. Add the flour into the strainer and use a whisk to push it through into the simmering soup, breaking up any lumps as it incorporates. Use a strainer with a slightly thicker mesh — too fine and the flour won't pass through.

Tip: Sifting flour through a strainer prevents lumps without making a separate roux. Texture is a conductor of flavor.

~3 min
7

Pour in the heavy cream and whisk to combine. Simmer for 10-15 minutes to cook out the raw flour taste.

Tip: The soup will continue to thicken as the flour cooks. Don't add more thickener until the flour has had time to do its work.

~15 min
8

Optional: if you want a thicker soup, make a cornstarch slurry (equal parts cornstarch and cold water, mixed well). With the soup boiling, drizzle in a little at a time, stirring constantly. It thickens fast — go slow. If you overshoot, thin it back with more stock.

Tip: Always keep extra stock on hand as insurance against over-thickening.

~5 min
9

Taste and adjust seasoning with salt and pepper. Optionally stir in some frozen corn kernels just before serving for added sweetness and texture.

Tip: Test a small spoonful in a side bowl with extra salt to gauge whether the whole pot needs more.

~2 min
10

Serve hot in warmed bowls. Blow on it — it's hot.

Tip: Nothing like a warm creamy soup on a cold day.

~1 min

Nutrition (per serving)

280

Calories

Protein

32g

Carbs

15g

Fat

Fiber

Cultural Context

Creamy vegetable soups (potages de legumes) are a cornerstone of French home cooking, born from the practical thrift of using whatever vegetables are at hand. Chef Jean-Pierre's version emphasizes the French technique of building flavor through proper sauteing (especially driving water out of mushrooms before they go into the pot) and finishing with a strained flour-cream liaison for that signature velvety texture. The philosophy here is improvisational: open the fridge, see what's there, and turn it into something silky and warming.