Miso mushroom pasta is one of those dinners that tastes like you tried harder than you did. Browned mushrooms, a spoonful of miso and a knob of butter turn a box of spaghetti into something savoury, glossy and properly satisfying. You need one pot, one wide pan and about 30 minutes.
The trick that makes it work is whipping the miso into soft butter first. Food52’s version does exactly this, beating the two into a smooth, fluffy paste so you don’t get salty lumps of miso in the finished dish, and so the sauce emulsifies easily. The rest is technique, and it’s all below.
| At a glance | Details |
|---|---|
| Prep | 10 minutes |
| Cook | 20 minutes |
| Serves | 2 generously |
| Kit | One large pot, one wide frying pan, a small bowl and a fork |
| Allergens | Gluten, dairy, soy (see the note at the end) |
Ingredients
- 200 g spaghetti or linguine
- 250 g mushrooms (chestnut, button or a mix), wiped and sliced or torn into chunky pieces
- 1 tbsp neutral oil, such as sunflower or vegetable
- 40 g soft butter
- 2 tbsp white miso paste (about 30 g), or 1 tbsp red miso, which is stronger and saltier
- 3 garlic cloves, finely sliced
- 1 spring onion, thinly sliced
- 1 tsp white wine vinegar or rice vinegar
- Black pepper
- Salt, for the pasta water only
- Optional: a handful of grated Parmesan or other hard cheese, to finish
The proportions follow the Bear Naked Food version, which uses 250 g of pasta and 200 g of mushrooms for two to three people and 45 g of butter with two tablespoons of miso. I’ve nudged them for a two-person dinner. White miso is milder and slightly sweet, as What To Cook Today explains, so it’s the safer buy if you only want one tub.
Method
- Boil the pasta. Fill a large pot with water and salt it generously. Cook the spaghetti for one minute less than the packet says, because it finishes cooking in the sauce. Before draining, scoop out a mugful (about 250 ml) of the starchy water and keep it nearby.
- Make the miso butter. While the water comes to the boil, mash the soft butter and miso together in a small bowl with a fork until smooth and pale. Set it aside.
- Dry-fry the mushrooms. Heat your wide pan over a medium-high heat with no fat in it and add the mushrooms in a single layer if you can. Cook for 4 to 5 minutes, stirring now and then, until the pan looks dry. Baking by Yuka recommends this step because cooking the mushrooms in a dry, hot pan first gets rid of their water and stops them going soggy.
- Brown them. Add the oil and cook for another 4 to 5 minutes, until the mushrooms are golden at the edges and shrunken. Stir in the garlic for 30 seconds, just until it smells good. Take care that it doesn’t catch.
- Build the sauce. Turn the heat to low and add the miso butter with 100 ml of the pasta water. Stir until the butter melts and the miso dissolves into a loose, glossy sauce that coats the mushrooms.
- Finish in the pan. Add the drained pasta and toss for 1 to 2 minutes, adding more pasta water a splash at a time until the sauce clings to every strand. The starch in the water gives the sauce its body, which is why you saved it.
- Season and serve. Take the pan off the heat, add the vinegar, the spring onion and plenty of black pepper. Taste before adding any salt, since miso is already salty. Top with cheese if you’re using it and eat straight away.
Swaps and tips
The recipe is already vegetarian as long as your miso and cheese are. For a vegan version, use plant-based butter and skip the cheese. Last Ingredient suggests dairy-free butter and Parmesan for a vegan version, and the sauce here doesn’t need cream.
| If you have | Use | What changes |
|---|---|---|
| No spaghetti | Any long or short pasta | Short shapes hold more sauce in their curves |
| Red miso only | 1 tbsp instead of 2 tbsp white | Stronger and saltier, so use less |
| No fresh garlic | 1/2 tsp garlic granules, added with the miso butter | Slightly softer flavour |
| Butter, but want a richer sauce | 2 tbsp cream stirred in with the pasta water | Rounder and creamier |
| No vinegar | A squeeze of lemon | A fresher, brighter finish |
Mushrooms are the main cost here, so buy loose ones if you can and use up what you’ve got. Mixed varieties give a nicer texture, and the recipe works with whatever is in the fridge. Don’t crowd the pan: if you’re doubling the recipe, brown the mushrooms in two batches so they sear instead of steaming.
The sauce thickens quickly once it sits. For leftovers, keep the pasta in a lidded container in the fridge and reheat it with a splash of water. Baking by Yuka’s advice for reheating is to use the microwave in 30-second bursts, so the sauce loosens without overheating.
If you don’t eat all the mushrooms, stir them into scrambled eggs the next morning or pile them on toast. A spoonful of miso butter also melts over rice or roasted vegetables, so a half-used tub of miso won’t go to waste.
Allergen note (as of 1 November 2026): this dish contains gluten (pasta), dairy (butter and optional cheese) and soy (miso). Some miso is made with barley, so check the label if gluten is a concern. Use gluten-free pasta and a labelled gluten-free miso if you need to.
Sources
- Food52: Miso-Mushroom Pasta
- Bear Naked Food: Miso-Butter Mushroom Pasta
- What To Cook Today: Pasta with Miso Butter and Sauteed Mushrooms
- Baking by Yuka: Steak Miso Mushroom Pasta Bento
- Last Ingredient: Easy Miso Mushroom Pasta with Scallions
Header image: illustration, AI-generated.