Silky Cream of Onion Soup🍖 Main

Name: Silky Cream of Onion Soup
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 4 servings
Ingredients: 1/3 cup butter; 1 lb sweet onions, cut into 1/4" slices; 3 ribs celery, finely chopped; 1/3 cup all-purpose flour; 1/4 tsp dried thyme leaves (or 1 sprig fresh thyme); 3 cups chicken broth; 3/4 cup heavy whipping cream; salt to taste; pepper to taste

This velvety onion bisque combines tender sweet onions with celery, rich stock, and luxurious cream to create a comforting dish that's both effortlessly elegant and heartwarming.

By Marcus Rivera, Kitchen Tips Editor

Prep: 15 minCook: 25 minServes: 4

soup comfort food creamy onion lunch dinner

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There's something magical about transforming a pile of humble sweet onions into a sophisticated soup that tastes like you've been simmering it all day. This recipe proves that elegance doesn't require complexity—just good technique and patience while those onions soften into silky submission. The addition of celery adds a subtle aromatic backbone that distinguishes this from traditional French onion soup, making it perfect for a quiet lunch at home or as the opening act to a dinner party.

The key to achieving that restaurant-quality texture lies in two crucial steps: first, cook your onions and celery until they're genuinely soft and sweet, not just wilted. Those extra few minutes make all the difference in developing flavor. Second, when you add the broth, pour it gradually while stirring constantly to prevent lumps from forming in your flour base. This creates the smooth, velvety consistency that makes each spoonful feel luxurious.

For a deeper flavor profile, try caramelizing the onions for 15-20 minutes before adding the celery, which will give you a richer, almost nutty undertone. You can also swap half the chicken broth for vegetable stock, or make it fully vegetarian with all vegetable stock. Serve this with toasted baguette slices rubbed with garlic, or for a fun twist, top each bowl with a small grilled cheese sandwich cut into soldiers for dipping.

Ingredients

1/3 cup butter
1 lb sweet onions, cut into 1/4" slices
3 ribs celery, finely chopped
1/3 cup all-purpose flour
1/4 tsp dried thyme leaves (or 1 sprig fresh thyme)
3 cups chicken broth
3/4 cup heavy whipping cream
salt to taste
pepper to taste

Nutrition (Per 4 servings)*

378

Calories

Protein

19g

Carbs

32g

Fat

Fiber

830mg

Sodium

* AI-estimated values only — not a substitute for professional nutrition labeling.

Instructions

Melt butter in a saucepan over medium heat. Add onions and celery and cook until tender and translucent, about 5 to 7 minutes.
Stir in flour and thyme, cook 1 minute more.
Stir in broth, a bit at a time, stirring until smooth after each addition.
Bring to a boil, reduce to a simmer and cook uncovered 8 to 10 minutes or until vegetables are very soft.
Blend soup with a hand blender, add in cream and simmer 5 minutes more. Season with salt & pepper to taste.
Garnish with parsley if desired and serve.