This vegetarian tagliatelle courgette pasta, shiitake mushrooms and tarragon butter make a perfect mid-week dinner.

When it comes to creating a simple yet elegant meal that bursts with fresh flavours, this Tagliatelle with Courgettes, Shiitake Mushrooms, and Tarragon Butter is a the perfect choice. Ideal for a cosy weeknight dinner or a sophisticated weekend gathering, this recipe brings together the delicate sweetness of courgettes, the rich umami of shiitake mushrooms, and the aromatic punch of tarragon butter. The result is a dish that is both comforting and refined, appealing to vegetarians, flexitarians and pasta lovers alike.
This recipe blends fresh vegetables and herbs. Courgettes, also known in the US as zucchini, absorb the richness of the butter and herbs beautifully. Shiitake mushrooms, prized for their meaty texture are the perfect complement. They are also rich in iron and high in protein.
The star of the dish, tarragon butter, deserves special attention. Tarragon is a unique herb with a distinctive flavour profile that combines hints of licorice, anise, and a subtle peppery warmth. Paired with creamy butter, it forms a delicious sauce.
One of the best aspects of this recipe is its versatility. It’s easily adaptable to accommodate different tastes and dietary needs. If you prefer heartier mushrooms, you can mix in portobello or cremini mushrooms alongside the shiitakes. For those avoiding gluten, simply swap out traditional tagliatelle for a gluten-free variety. A sprinkle of toasted pine nuts or walnuts on top is ideal is you want a bit of crunch.
You can add vegetarian parmesan style cheese on top but personally, I prefer them just “as is”. Of course, this dish can easily be made vegan by replacing the butter with olive oil and choosing egg-free pasta.
If you’re in the mood for a complete Italian-inspired feast, a side of garlic bread or a light green salad with a lemon vinaigrette will this tagliatelle courgette recipe perfectly.
Other pasta recipes you might enjoy:
I hope you enjoy this tagliatelle pasta with courgettes, shiitake mushrooms and tarragon butter recipe as much as I do. If you do make it, don’t forget to tag me on Instagram!

Tagliatelle with Courgettes, Shiitake Mushrooms and Tarragon Butter [vegetarian]
Equipment
Disclaimer: the equipment list above includes affiliate links to products I use and like.
Ingredients
- 240 g shiitake mushrooms
- 400 g courgettes
- 1 Tbsp butter
- 1 Tbsp olive oil
- 4 shallots finely chopped
- 2 garlic cloves grated
- 300 g dry tagliatelle
- 75 g butter softened
- 2 Tbsp fresh parsley finely chopped
- 2 Tbsp dry tarragon
- 1 Tbsp fresh thyme leaves
- 1 lemon zest
- juice of 1/2 lemon
- salt & pepper
Instructions
- Roughly slice the shiitake mushrooms.240 g shiitake mushrooms
- Cut the courgette in small slices.400 g courgettes
- Heat 1 tbsp of butter and 1 tbsp of olive oil in a large deep frying pan.1 Tbsp olive oil, 1 Tbsp butter
- Add the shallots and garlic. Cook until soft and golden.4 shallots, 2 garlic cloves
- Add the courgettes and cook for 5 mins.
- Add the shiitake mushrooms. Carry on cooking for around 15mins until the courgettes are soft. Stir often.
- In the meantime heat a large pan of salted water and cook the tagliatelle until they are al dente.300 g dry tagliatelle
- Prepare the tarragon butter by mixing together: 75g [UK 3oz /US ⅓ cup] soft butter, parsley, tarragon, thyme, lemon zest, lemon juice and 1/2 tsp of salt.75 g butter, 2 Tbsp fresh parsley, 2 Tbsp dry tarragon, 1 Tbsp fresh thyme leaves, 1 lemon zest, juice of 1/2 lemon
- Once the tagliatelle are cooked, drained well and put them back in their pan. Add tarragon butter and mix well to coat pasta all over.
- Add the courgettes and shiitake mushrooms to the tagliatelle. Mix well. Season to taste.salt & pepper
- Serve straight away.
Nutrition
Find this recipe online:
Tagliatelle with Courgettes, Shiitake Mushrooms and Tarragon Butter [vegetarian]
https://theflexitarian.co.uk/recipe-items/tagliatelle-with-courgettes-shiitake-mushrooms-and-tarragon-butter/
I cannot wait to see your posts!
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