Indulge in this exquisite vegetarian mushroom pasta, a delightful dish generously packed with perfectly caramelized crimini mushrooms, vibrant sweet peas, freshly grated parmesan cheese, and a lavish drizzle of O-Live Organic Olive Oil. This recipe promises a rich flavor profile and a satisfying texture, making it an instant family favorite.

This post has been proudly sponsored by O-Live & Co. All thoughts and opinions expressed herein are genuinely my own.
Creamy Vegetarian Mushroom Pasta: A Weeknight Delight
Searching for a quick, wholesome, and incredibly flavorful meal that appeals to everyone? Look no further than this creamy vegetarian mushroom pasta. It’s the kind of dish that embodies comfort food while being surprisingly simple to prepare, making it ideal for busy weeknights or a relaxed weekend dinner.
The Irresistible Harmony of Olive Oil and Pasta
It’s an undeniable truth: olive oil and pasta are a culinary duo destined for greatness. Much like bread and butter, their synergy elevates simple ingredients into a gourmet experience. This particular recipe for vegetarian mushroom pasta has been a staple in our home for years, precisely because it effortlessly combines rich flavors with straightforward preparation.
For too long, this cherished recipe remained a secret, living only in my kitchen and my memory. But thanks to my wonderful friends at O-Live & Co., I’m thrilled to finally share it with you! This recipe takes a classic cream-based white sauce and transforms it into something truly special. We amplify the flavors with deeply caramelized mushrooms, crisp sweet peas, a hint of fresh arugula, and a zesty squeeze of lemon juice. The result is a guaranteed crowd-pleaser that graces your dinner table in under 30 minutes – a testament to its efficiency and deliciousness.
Why This Creamy Mushroom Pasta Will Become Your New Favorite
- Unforgettable Flavor: The star of the show, caramelized crimini mushrooms, provide an umami depth that’s perfectly complemented by the creamy sauce and bright peas.
- Lightning-Fast Preparation: From pantry to plate in less than 30 minutes, this pasta is a savior for those busy evenings when you crave a homemade meal without the fuss.
- Incredible Versatility: Don’t have mushrooms or peas? No problem! This recipe is incredibly adaptable. Feel free to swap them out for whatever vegetables you have on hand. Asparagus, broccoli florets, and zucchini ribbons are some of my favorite alternatives that integrate beautifully into the sauce.
- Simple & Satisfying: Once your chosen vegetables are cooked to perfection (whether caramelized like our mushrooms, left raw like our peas, or even roasted or air-fried), it’s as simple as folding them into the luscious sauce with your freshly cooked pasta. It’s effortless elegance on a plate.

Essential Ingredients for Your Vegetarian Mushroom Pasta
To whip up this delightful vegetarian mushroom pasta tonight, here’s your comprehensive grocery list. Each ingredient plays a crucial role in creating the rich, harmonious flavors that define this dish.
- 2 tbsp O-Live Organic Olive Oil: The foundation of our flavor, providing a smooth, peppery note.
- 2 tbsp salted butter: Adds richness and helps achieve that perfect caramelization on the mushrooms.
- 1 cup crimini mushrooms, sliced: Crimini (baby bella) mushrooms offer a deeper, earthier flavor when caramelized.
- 4 cloves garlic, minced: For an aromatic kick that infuses the entire sauce.
- 1 tbsp all-purpose flour: Used to create a light roux, thickening our creamy sauce to perfection.
- 1 cup vegetable stock: The base liquid for our sauce, adding savory depth.
- 1 cup heavy cream: The key to achieving that luxurious, velvety texture for the pasta sauce.
- ½ cup parmesan cheese, freshly grated: Essential for its salty, umami notes that melt beautifully into the sauce. (Plus additional parmesan for garnish!)
- 1 tsp salt: To season and enhance all the flavors.
- 1 tsp black pepper: Adds a gentle warmth and spice.
- ¼ tsp nutmeg: A secret ingredient that brings a subtle, warm complexity to cream sauces.
- 1 cup sweet peas: Fresh or frozen, these add a pop of color and natural sweetness.
- 1 box of pasta (16oz): Your favorite shape will do – penne, fettuccine, or spaghetti work wonderfully. Don’t forget water to boil and a pinch of salt!
- A handful of fresh arugula or microgreens: For a peppery garnish and a touch of freshness.
- 1 lemon: A final squeeze of lemon juice brightens the entire dish and ties all the flavors together.

How to Make This Dreamy Vegetarian Mushroom Pasta
Crafting this incredible creamy mushroom pasta is an enjoyable process. Follow these step-by-step instructions to create a restaurant-quality meal right in your kitchen.

- Caramelize the Mushrooms: In a spacious saucepan or a deep skillet, melt the butter along with the O-Live & Co. olive oil over medium-high heat. Once shimmering, add the sliced mushrooms. Cook them patiently, allowing them to caramelize until beautifully golden brown on both sides. This step is crucial for developing deep, savory flavors. Once done, remove the mushrooms and set them aside on a plate for later.

- Prepare the Pasta Water: Simultaneously, bring a large pot of generously salted water to a rolling boil over medium-high heat. This will be for your pasta, so make sure it’s ready.

- Build the Cream Sauce Base: Return to the saucepan where you cooked the mushrooms. Add the minced garlic to the remaining oil and butter in the pan, cooking for about 30 seconds until fragrant (be careful not to burn it). Sprinkle in the flour, and using a whisk, combine it thoroughly with the oil and butter to form a roux. Cook this flour-and-oil mixture for 1-2 minutes to eliminate any raw flour taste. Then, slowly pour in the vegetable stock and heavy cream, continuously whisking to ensure a smooth, lump-free sauce.

- Season the Sauce & Cook Pasta: Once the sauce has gently thickened to your desired consistency over a few minutes, stir in the salt, pepper, a pinch of nutmeg, and the grated parmesan cheese. Mix everything well until the cheese has fully melted and the sauce is perfectly seasoned. At this precise moment, add your pasta to the boiling salted water and cook according to the package directions until al dente.

- Combine & Finish: Once the pasta is cooked, drain it, but be sure to reserve about half a cup of the starchy pasta water. Add the strained pasta directly to your creamy sauce. Fold in the sweet peas and the reserved caramelized mushrooms. Mix everything gently to ensure the pasta is thoroughly coated with the luscious sauce. If the sauce seems a little too thick or dry, gradually add a tablespoon or two of the reserved pasta water until it reaches your preferred consistency.

- Garnish & Serve: For the grand finale, generously sprinkle each serving with a squeeze of fresh lemon juice, an extra dusting of parmesan cheese, and a light handful of fresh arugula or microgreens. Serve immediately and savor every delicious bite!
O-Live & Co. Organic Olive Oil: The Secret to Exceptional Flavor
By now, I sincerely hope you’ve had the opportunity to explore O-Live & Co. and their exceptional range of olive oils, especially their Organic Olive Oil, which remains my absolute favorite. This isn’t just any olive oil; it’s a culinary game-changer. Its robust, fruity notes and peppery finish make it fantastic for high-heat cooking, lending incredible depth to our caramelized mushrooms. Beyond the pan, it’s also perfect for drizzling raw over a crusty slice of bread or, of course, generously finishing a beautiful, steaming bowl of this vegetarian mushroom pasta.
It comes as no surprise that O-Live & Co. has garnered multiple prestigious awards, achieving an impressive 97/100 points in the Flos Olei rankings – the world’s most prominent and respected olive oil guide. This recognition is a testament to the brand’s unwavering commitment to quality and the sheer deliciousness of their oils.
It has been a true honor and pleasure to partner with O-Live & Co. over the past year. Their support has been invaluable, especially during what has been a challenging period for many small businesses. I wholeheartedly encourage you to take a moment to visit their website, learn more about their incredible products, and try their exquisite olive oils for yourself. You’ll taste the difference that true quality makes in your cooking.

Shop O-Live & Co. Olive Oil here to elevate your culinary creations!
More Recipes Featuring O-Live & Co. Olive Oil
If you love the quality of O-Live & Co. olive oil as much as I do, you’ll be thrilled to incorporate it into these other fantastic recipes from my kitchen:
- Crunchy Tuna Tostadas
- Moroccan Lentil Salad
- French Onion Soup
- Moroccan Fava Bean Soup
- Loaded Cauliflower Soup
- Sheet Pan Steak Fajitas
Conclusion: A Simple Recipe, Grand Flavors
This creamy vegetarian mushroom pasta is more than just a meal; it’s an experience of rich, comforting flavors brought to life with minimal effort. The combination of savory caramelized mushrooms, sweet peas, and a luscious cream sauce, all brightened by lemon and the exceptional quality of O-Live Organic Olive Oil, makes this dish truly special. Whether you’re a seasoned chef or a kitchen novice, you’ll find joy in preparing and devouring this simple yet elegant pasta. It’s perfect for impressing guests or simply treating yourself and your family to a nourishing and satisfying dinner.
Happy cooking!

Vegetarian Mushroom Pasta
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- Author: Salima Benkhalti
- Prep Time: 10 minutes
- Cook Time: 20 minutes
- Total Time: 30 minutes
- Yield: 3–4 servings
- Category: Pasta
- Method: Stovetop
- Cuisine: American, Italian
- Diet: Vegetarian
Ingredients
- 2 tbsp O-Live Organic Olive Oil
- 2 tbsp salted butter
- 1 cup mushrooms, sliced
- 4 cloves garlic, minced
- 1 tbsp flour
- 1 cup vegetable stock
- 1 cup heavy cream
- ½ cup parmesan cheese, grated (plus additional parmesan for the garnish)
- 1 tsp salt
- 1 tsp pepper
- ¼ tsp nutmeg
- 1 cup peas
- 1 box of pasta (16oz) + water to boil + salt
- A handful of arugula or microgreens to garnish
- 1 lemon to garnish
Instructions
- In a saucepan melt the butter and O-Live & Co. olive oil over medium high heat. Toss in the sliced mushrooms and caramelize until golden brown on both sides. Set the mushrooms on a plate and save for later.
- Get your pasta water and salt boiling in a separate pot over medium high heat.
- Add minced garlic to the pan with the remaining oil and butter. Sprinkle flour in the pan, using whisk to combine the oil and flour. Cook the flour and oil for a minute or two before slowly pouring in the veggie stock and cream, while continuing to whisk.
- Once the sauce has thickened for a few minutes, add in salt, pepper, nutmeg and parmesan cheese, mixing well. At this point, throw your pasta into the water and cook as instructed on the packaging.
- Once the pasta is done, strain (reserving a half a cup of the pasta water) and add pasta to the sauce. Mix the pasta, peas and cooked mushrooms together with the sauce, adding additional pasta water if it feels dry at all.
- Sprinkle with a squeeze of lemon juice, additional parmesan and a light handful of arugula and enjoy!