This creamy asparagus soup is made with green asparagus, a gently softened onion, vegetable broth and a handful of baby spinach. Butter gives it a rounded flavour, while blending creates the smooth texture without added cream. It is a simple spring starter, finished with fresh basil if you like.

Cream of asparagus is a smooth blended vegetable soup; in this version, “cream” describes the texture rather than an ingredient. This recipe is based on my video, with standardized amounts for the onion, butter and spinach and clearer texture checks since publication. The asparagus and broth quantities retain the video’s proportions.

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A light asparagus soup for spring

Green asparagus supplies the main flavour, onion brings gentle sweetness, and baby spinach supports the green colour without requiring a flour-based thickener. I soften the onion without browning it so its flavour stays mild. This is a pourable vegetable soup, suitable as a first course, rather than a thick purée that sits heavily in the bowl.

If you enjoy this style of cooking, potage Crécy carrot soup offers another smooth vegetable starter. For a version built around leeks and potatoes, see easy blended vegetable soup. Each uses a different vegetable base, so the thickness and cooking time should follow its own recipe.

Do the original proportions make sense?

The video uses about 1 pound 2 ounces of asparagus and roughly 4¼ cups of vegetable broth. The broth is added in two stages: part for cooking and the remainder after blending. This ratio can produce a smooth, light soup, especially with the onion and spinach. It will not have the dense texture of a restaurant velouté thickened with potato, flour or cream. That distinction matters when judging the result.

The video shows one onion, butter and baby spinach without clearly stating their weights. This written version standardizes them at a medium onion, 2 tablespoons of butter and a small handful of spinach. Those measurements make the recipe practical without introducing a different base. Basil is the final optional garnish; it is not the green leaf blended into the soup. No cream is missing from the method.

The recipe should work if the asparagus is fully tender and the fibrous ends are removed. The main weaknesses in a brief video are the lack of precise trimming instructions, variable asparagus thickness and an assumed blender technique. I spell those out below. This is an analysis and clarification of the filmed method, not a claim that I have newly tested the standardized recipe.

Ingredients for cream of asparagus

1 lb 2 oz fresh green asparagus, weighed before trimming

1 medium yellow onion, about 5 oz, peeled and finely chopped

2 tbsp unsalted butter

4¼ cups lightly seasoned vegetable broth, divided

1¾ oz baby spinach, about 2 loosely filled cups, washed

Salt and freshly ground black pepper, to taste

A few fresh basil leaves, optional, for serving

Choose firm asparagus stalks with closed tips. Remove the dry, woody bottoms even though those pieces are part of the initial bunch weight. Very thick stalks may also benefit from peeling the tough outer skin on the lower section. The tender tips and stalks both go into this soup. An attractive bunch is not enough if the bases are still stringy.

Use a mild broth so the asparagus remains recognizable. A heavily salted or strongly flavoured stock can dominate a delicate vegetable soup. If you use homemade chicken bouillon cubes diluted into broth, the result is a variation and no longer vegetarian. For the original version, keep a vegetable broth. Wash the spinach well and drain it; a small amount is enough to complement the asparagus.

How to make asparagus soup

1. Soften the onion in butter

Melt the butter in a saucepan over medium-low heat. Add the chopped onion and cook for about 5 minutes, stirring, until softened and translucent. It should not brown. If the edges colour quickly, reduce the heat. This gentle start keeps the final soup pale green instead of introducing roasted onion flavour.

2. Trim and chop the asparagus

Wash the asparagus and cut away the woody ends. Peel the lower part of thick stalks if the skin is tough. Cut the usable stalks and tips into short pieces, about ½ inch long. Small, even pieces cook predictably and are easier to blend. Do this while the onion softens, but keep an eye on the saucepan so the butter does not burn.

3. Simmer the asparagus until tender

Add about 2⅛ cups of the broth to the softened onion and bring to a boil. Add the asparagus, a little salt if the broth needs it, and freshly ground black pepper. Lower the heat, cover and simmer for about 13 minutes. Check a thick stalk piece: it should crush readily with a spoon. Allow a few more minutes for thicker stalks rather than relying on the timer alone.

4. Add the baby spinach near the end

Stir in the spinach and cook for about 2 more minutes, just until wilted and tender. This matches the video’s late addition. A long boil is unnecessary at this point and can dull the colour. Turn off the heat once both vegetables are tender. Spinach helps the appearance, but adding too much would change the soup’s asparagus character.

5. Blend, adjust and warm through

Blend until smooth with an immersion blender, keeping the blade submerged. Alternatively, let the soup cool enough for a heat-safe countertop blender, work in small batches and follow its instructions for venting steam. Do not seal boiling soup in an unsuitable blender. Return the purée to the saucepan and gradually stir in the remaining 2⅛ cups of broth. The video uses the full quantity for a light consistency.

Taste and adjust salt and pepper. Warm gently just to a simmer, then serve. A spoonful should pour smoothly with a little body rather than separate into broth and coarse vegetable pieces. If you prefer a thicker variation, stop adding the reserved broth when the texture suits you; the yield will be smaller. For an especially fine result, pass through a fine sieve, which also reduces the final yield.

Texture and colour troubleshooting

Stringiness usually starts with woody stalk ends or tough skin, not with too little blending time. Trim generously enough to reach tender flesh. A few stubborn fibres can be caught in a fine sieve, but straining is a finishing option, not a substitute for proper trimming. Do not add raw asparagus to the finished soup in an attempt to make it thicker.

A watery soup can result from adding extra liquid beyond the stated quantity, or from a bunch that loses a large portion to trimming. Reserve the second addition of broth and judge the purée before pouring it all in. If you already used every drop, a short uncovered simmer can reduce it, but prolonged cooking weakens the fresh green character. For future batches, the staged liquid addition gives you better control.

An olive-green colour is not necessarily a failed soup: cooked asparagus, broth and lighting all affect its appearance. Avoid lengthy reheating and add the spinach late. More spinach intensifies green but also changes flavour. There is no need to use colouring or to promise that every bowl will match the thumbnail’s colour exactly.

Serving and more vegetable soup ideas

Serve four starter portions, with bread on the side. homemade focaccia brings a pleasant contrast without changing the soup itself. Keep any basil garnish small so it complements the asparagus. If asparagus is abundant, use another bunch in asparagus gratin with béchamel or savory asparagus and mushroom crêpes.

For other bowls built around everyday vegetables, try easy broccoli soup, leek soup with cheesy croutons or potage Parmentier. In warmer weather, cold zucchini soup offers a chilled alternative. The collection of French and vegetable soups provides more choices for planning a starter.

Substitutions

Frozen green asparagus can replace fresh if it is already trimmed; use the same usable vegetable amount and cook until tender. Its texture may soften more quickly. Spinach can be omitted for a paler soup, although the colour will differ from the video. Swiss chard is not an identical swap because its stems and stronger flavour need different handling.

Replace the butter with 2 tablespoons of mild olive oil for a dairy-free version. Keep vegetable broth to make that version vegan. Chicken broth is another possible variation, but it changes both the flavour and the recipe’s suitability for a vegetarian meal. Cream is optional only as a separate variation; it is unnecessary for reproducing the filmed recipe.

Frequently asked questions

Why call it cream of asparagus if there is no cream?

Here, the name refers to the smooth, blended finish. Butter adds richness, and tender vegetables supply the texture. The recipe does not rely on dairy cream, flour or a potato thickener.

Is the spinach just a garnish?

No. Baby spinach is cooked briefly in the soup and blended with it. The fresh basil leaves shown on the finished bowl are the garnish. Keeping those roles separate avoids changing the recipe’s flavour.

Can I prepare it ahead?

Yes. Cool promptly, refrigerate in a covered container and reheat only the amount needed, stirring gently. Keep the fresh basil separate until serving. A small splash of broth can loosen a reheated portion if necessary.

Can I double the recipe?

Yes. Double the vegetables, butter and broth, and use a larger saucepan. The cooking time depends on tenderness, not simply on batch size. Blend in manageable batches and adjust the reserved broth gradually.