Vegan Chicken Tetrazzini with Mushrooms

Total time1 hr 10 min

Prep time20 min

Cook time45 min

5.0

(15)

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Ingredients

6 servings

For the pasta

12 oz spaghetti

For the chicken

1 ½ lb boneless, skinless chicken breasts
Chef's tip
Choose an unbreaded plant-based cutlet and cook it according to its package - ignore the recipe's raw-chicken cooking times and temperatures - then use it where the cooked chicken goes.
½ tsp salt

For the sauce

3 tbsp unsalted butter
Chef's tip
Use a stick or block-style dairy-free butter - not a soft tub spread - and swap one-for-one.
2 medium leeks, white and light-green parts only, thinly sliced
10 oz cremini mushrooms, sliced
3 tbsp all-purpose flour
2 cups low-sodium chicken broth
Chef's tip
Use the same amount of low-sodium vegetable broth. The dish will be a little lighter in flavor than with chicken broth.
1 cup milk
Chef's tip
Use plain, unsweetened oat milk, measured 1:1. It works well in drinks, batters, sauces, and soups; avoid it where milk sets the texture, like custards, puddings, and frozen desserts.
½ tsp dried thyme
¼ tsp salt
½ cup grated parmesan cheese
Chef's tip
Choose a grated-style vegan parmesan and use the same amount.

For the topping

½ cup plain breadcrumbs
2 tbsp unsalted butter, melted
Chef's tip
Use a stick or block-style dairy-free butter - not a soft tub spread - and swap one-for-one.

For serving

2 tbsp fresh flat-leaf parsley, chopped (optional)

Instructions

1
Preheat the oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish and set aside.
2
Bring a large pot of salted water to a boil. Cook the spaghetti until just shy of al dente — tender but with a firm, chalky center — about 1 minute less than the package directions. Drain in a colander and set aside.

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