Once everything is blended with cream, basil, and broth, the sauce turns silky and smooth, then finishes cooking right in the oven with the spaghetti.

This is the kind of dinner that looks colorful, tastes cozy, and doesn’t leave you standing over the stove the whole time. It’s simple enough for a weeknight, but it still feels like something a little more special when it lands on the table.

Why You’ll Love This Roasted Veggie Pasta

This roasted veggie pasta keeps things easy without tasting plain. Roasting the vegetables first gives the sauce a fuller flavor, and blending everything together makes it creamy without needing a long list of ingredients. The spaghetti cooks right in the sauce, which means fewer dishes and even more flavor in every bite.

You’ll love this recipe because:

• the sauce is rich, smooth, and full of roasted vegetable flavor
• roasted garlic gives it a softer, deeper taste than garlic powder
• everything bakes in one dish
• spaghetti works beautifully with the creamy sauce
• it looks vibrant and feels comforting at the same time

Ingredients

For the roasted vegetables

• 1 cup cherry tomatoes
• 1/2 red bell pepper, chopped
• 1/2 yellow or orange bell pepper, chopped
• 1/2 medium zucchini, chopped
• 1 small red onion, cut into wedges
• 1 whole garlic bulb
• 1 1/2 tablespoons olive oil

For the seasoning

• Salt, to taste
• Black pepper, to taste
• 1 teaspoon Italian seasoning
• 1/4 teaspoon red pepper flakes, optional

For the sauce

• 3/4 cup heavy cream
• 1 cup vegetable broth
• Small handful fresh basil

For the pasta

• 7 ounces spaghetti

Equipment

• Deep oven-safe baking dish
• Small piece of foil
• Blender or immersion blender
• Spoon or spatula

Instructions

1. Roast the vegetables
Preheat the oven to 425°F. Add the cherry tomatoes, bell peppers, zucchini, and red onion to a deep baking dish. Drizzle with olive oil and season with salt, black pepper, Italian seasoning, and red pepper flakes, if using.

Cut the top off the garlic bulb, drizzle with a little oil, wrap in foil, and place it in the dish. Roast for 30 to 35 minutes, until the vegetables are soft and the tomatoes have burst.

2. Blend the sauce
Squeeze the roasted garlic cloves into the dish. Add the heavy cream, vegetable broth, and basil, then blend until smooth. If the sauce seems too thick, add a small splash of broth.

3. Add the spaghetti
Break the spaghetti in half and add it to the sauce. Press it down gently so most of it is covered.

4. Bake the pasta
Return the dish to the oven and bake for 18 to 22 minutes, stirring once halfway through. If needed, add a splash of broth or hot water so the pasta cooks evenly.

5. Serve
Stir well, then serve warm with extra basil, red pepper flakes, or Parmesan on top.

Love how this Creamy Roasted Veggie Pasta turned out? Save the image below to your Pinterest board so it’s right there when you need an easy pasta dinner that still feels special.

Tips and Tricks

• Use a deep baking dish: This helps hold enough liquid for the spaghetti to cook properly.
• Do not skip the roasted garlic: It adds a sweeter, more rounded flavor that makes the sauce taste much better.
• Cut the vegetables into similar-sized pieces: That way they roast evenly and blend more smoothly.
• Stir halfway through baking: This keeps the spaghetti from clumping and helps it cook evenly.
• Add extra liquid only if needed: Ovens and baking dishes vary, so keep an eye on the sauce near the end.
• Blend until fully smooth: A silky sauce works best here because it coats the spaghetti more evenly.

Variations

This version is already full of flavor, but you can still tweak it depending on what you have on hand.

• Add a little grated Parmesan to the sauce for an even richer finish
• Stir in spinach at the end and let it wilt into the hot pasta
• Add cooked chicken on top to turn it into a heartier dinner
• Use a little more red pepper flakes if you want more heat
• Finish with burrata or torn mozzarella for a creamier serving option

Storage and Reheating

Store leftovers in an airtight container in the fridge for up to 3 days.

To reheat, warm it gently on the stove or in the microwave with a splash of broth, cream, or water to loosen the sauce. The pasta will continue soaking up liquid as it sits, so adding a little moisture helps bring it back to life.

Frequently Asked Questions

Can I use another pasta shape?

Yes, but spaghetti works especially well in this version. Short pasta can work too, though cooking time may vary slightly.

Do I have to roast the garlic separately?

Yes, it’s worth it. Wrapping the garlic in foil keeps it soft and prevents it from drying out or burning in the oven.

Can I make the sauce ahead of time?

Yes. You can roast and blend the sauce ahead, then refrigerate it until you’re ready to bake it with the spaghetti.

What if my sauce gets too thick?

Add a splash of broth or hot water and stir. That usually fixes it quickly.

Can I make it more cheesy?

Absolutely. Parmesan on top or mixed into the sauce works really well here.