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Roasted Vegetable Pasta With Cashew Pesto
This roasted vegetable pasta is a practical, vegetable-forward dinner that relies on the deep flavors of oven-charred peppers, onions, and zucchini. By roasting a variety of vegetables at a high temperature and tossing them with a thick, house-made cashew basil pesto, you create a meal that is both filling and useful for a busy week.
Designed to be ready in 40 minutes, this recipe yields four generous servings as a main meal or six servings as a side dish. Because the ingredients hold their texture well, it is a reliable choice for those who prefer to prep meals in advance and need a dish that tastes just as good the next day.
What You’ll Need
The success of this dish depends on a mix of high-moisture and firmer vegetables that soften and caramelize at the same oven temperature. Using two separate baking sheets ensures the vegetables have enough space to roast rather than steam, which is essential for achieving the right texture.
- Vegetables: One baby eggplant (sliced and quartered) or an additional zucchini, one medium zucchini, one red bell pepper, one yellow bell pepper, and one red onion. You can also add grape tomatoes if you have them on hand.
- Roasting Details: Avocado oil or olive oil provides the base for roasting, seasoned simply with garlic powder, salt, and black pepper.
- Cashew Pesto: This unique sauce uses roasted or raw cashews (or cashew butter) as the creamy base, combined with fresh basil leaves, oil, salt, and a small amount of warm water to achieve the desired consistency.
- Pasta and Cheese: Eight ounces of cellentani pasta is recommended for catching the pesto, though whole wheat or gluten-free varieties work equally well. The dish is finished with goat cheese crumbles for a creamy, tangy contrast.
How to Make It
The process is straightforward, moving from high-heat roasting to quick blending while the pasta boils. Following the specific timing for stirring and rotating the pans ensures that every vegetable chunk is evenly cooked and tender.
- Preheat your oven to 400°F and line two large baking sheets with parchment paper to prevent sticking.
- Prepare the vegetables by cutting them into uniform chunks. Divide the mixture evenly between the two trays.
- Drizzle each tray with one tablespoon of avocado or olive oil, then sprinkle with garlic powder, salt, and pepper.
- Toss the vegetables thoroughly to ensure they are well-coated before spreading them out into a single layer.
- Roast the vegetables for 15 minutes. At this point, remove the trays to stir the contents and rotate the pans between the oven racks.
- Continue baking for another 15 to 20 minutes until the vegetables are completely tender and slightly browned.
- While the oven does the work, place the cashews, basil, oil, salt, and warm water into a food processor or high-powered blender.
- Process the pesto ingredients until the mixture is thick but smooth.
- Cook your chosen pasta in salted water according to the package directions until it reaches an al dente texture.
- Drain the pasta and return it to the warm pot. Fold in the prepared pesto, the tray of roasted vegetables, and half of the goat cheese crumbles.
- Transfer to bowls or divide into meal prep containers, garnishing with the remaining goat cheese and extra basil leaves.
Use Two Sheet Pans
One of the most important steps in this roasted vegetable pasta recipe is using two large baking sheets. When vegetables are crowded onto a single tray, they release moisture that gets trapped, leading to soggy, steamed vegetables rather than the slightly charred, caramelized results you want for pasta.
By dividing the eggplant, zucchini, peppers, and onions between two sheet pans, you allow air to circulate around each piece. This helps the natural sugars in the red onion and bell peppers develop. Remember to keep the stir-and-rotate step at the 15-minute mark; this ensures the vegetables on the bottom rack get the same heat exposure as the ones on the top, resulting in a consistent texture across the entire batch.
Blend the Cashew Pesto
The cashew pesto serves as the primary seasoning for this dish. Unlike traditional pestos that rely on pine nuts and hard cheeses, this version uses cashews to create a dense, creamy mouthfeel. You can use either roasted or raw cashews depending on the depth of nuttiness you prefer, or even swap them for two tablespoons of cashew butter if you do not have a high-powered blender.
When blending the basil, oil, and salt, the warm water is a critical addition. Since cashews contain quite a bit of fiber and fat, the pesto can become very thick. Adding the water slowly while processing allows you to control the consistency, ensuring it remains thick enough to coat the cellentani pasta but smooth enough to incorporate easily with the roasted vegetables. Avoid adding common additives like garlic or lemon to the blender; the garlic powder on the vegetables provides all the aromatic balance needed.
Meal Prep and Serving
This recipe is highly versatile for those looking to stock their fridge for the week. Because it yields four full meal portions, you can easily distribute the pasta into meal prep containers immediately after mixing. The goat cheese crumbles added at the end will soften slightly against the warmth of the pasta, creating a light sauce that binds the ingredients together.
If you are looking for other plant-forward options for your weekly rotation, you might also enjoy a vegan Marry Me pasta. For those who prefer a varied texture in their lunches, this dish can be customized with your favorite proteins, though it is perfectly filling on its own due to the density of the cashews and the volume of the vegetables. It also serves as an excellent side dish for six people if paired with a larger Mediterranean-style spread, similar in utility to a red lentil pasta salad.
Storage Notes
Proper storage is key to maintaining the texture of the roasted vegetables and the freshness of the basil. Store any leftovers in an airtight container in the refrigerator for up to 4 to 5 days. Unlike many cream-based pastas, this dish does not separate or become overly oily when stored.
One of the best practical features of this recipe is that it can be enjoyed hot or cold. For a quick lunch, it is delicious and refreshing straight from the fridge. If you prefer a warm meal, you can heat it slightly in the microwave until it reaches your desired temperature. This flexibility makes it a favorite for office lunches where microwave access might be limited.
Frequently Asked Questions
Can roasted vegetable pasta be meal prepped?
Yes, this is an ideal meal prep dish because the roasted vegetables and cashew pesto hold up well over several days. Simply divide the finished pasta into airtight containers and store them in the refrigerator.
How long does roasted vegetable pasta keep?
When stored correctly in an airtight container, this pasta will stay fresh in the refrigerator for up to 4 to 5 days. It is not recommended for the freezer as the texture of the zucchini and eggplant can become mushy upon thawing.
Can it be eaten cold?
Absolutely. This dish functions much like an Italian pasta salad when chilled. The cashew pesto and goat cheese remain flavorful even when cold, making it a great option for packed lunches.
Can I use cashew butter for the pesto?
If you do not have whole cashews or a strong blender, you can substitute two tablespoons of cashew butter. This will provide the same creamy texture and nutty flavor without the need for heavy grinding.
What pasta works for this recipe?
While cellentani is excellent for its ability to hold sauce, you can use any pasta of your choice. Penne, rotini, or even whole wheat or gluten-free options are all suitable for this recipe.
Conclusion
This Roasted Rainbow Vegetable Pasta with Cashew Pesto + Goat Cheese is a reliable, straightforward dinner that transitions perfectly into several days of lunches. By focusing on the 400°F roasting method and the creamy texture of the cashew pesto, you can create a satisfying meal that fits into a busy schedule. Whether you serve it immediately from the pot or portion it into meal prep containers to eat cold later in the week, it remains a practical staple for any home cook.
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Roasted Rainbow Vegetable Pasta with Cashew Pesto + Goat Cheese
- Total Time: 40
- Yield: 4 servings
- Diet: Vegetarian
Description
A vibrant, vegetable-forward pasta dish featuring roasted bell peppers, zucchini, and onions tossed with cashew basil pesto and tangy goat cheese. Ready in 40 minutes, this hearty meal is perfect for meal prep and reheats beautifully.
Ingredients
1 small eggplant (sliced and quartered)
1 medium zucchini (cut into chunks)
1 red bell pepper (cut into chunks)
1 yellow bell pepper (cut into chunks)
1 red onion (sliced into wedges)
2 tablespoons avocado oil or olive oil
1 teaspoon garlic powder
Salt and black pepper to taste
1 cup raw or roasted cashews
1 cup packed fresh basil leaves
1 tablespoon avocado oil (for pesto)
1/4 cup warm water (adjusted as needed)
8 ounces cellentani or short pasta
Freshly crumbled goat cheese (optional)
Instructions
Preheat oven to 400°F (200°C) and line two baking sheets with parchment paper.
Cut vegetables into uniform chunks and divide between the pans.
Drizzle each pan with avocado oil, then season with garlic powder, salt, and pepper.
Toss evenly to coat, then spread in single layers.
Roast for 15 minutes, then stir and rotate pans to all racks. Bake 15-20 minutes longer until tender and browned.
Meanwhile, blend cashews, basil, 1 tablespoon avocado oil, salt, and 1/4 cup water in a food processor until smooth. Add more water if needed for desired consistency.
Cook pasta according to package instructions. Drain and toss with roasted vegetables and pesto.
Top with goat cheese and fresh basil before serving.
Notes
Use parchment-paper-lined baking sheets for non-stick results
Substitute cashew butter for whole cashews + water blending
Add grape tomatoes (~1 cup) if available
Leftovers taste better the next day due to flavor development
Vegetables can be roasted up to 2 days in advance
- Prep Time: 10
- Cook Time: 30
- Category: Dinner
- Method: Roasting
