Roasted Garlic Aglio e Olio
Roasted Garlic Aglio e Olio is my twist on the Italian classic. Two whole heads of roasted garlic blended with extra virgin olive oil and pasta water into a smooth, creamy sauce, then tossed with spaghetti. It’s not traditional aglio e olio, but it’s deeply garlicky, silky and ready in 45 minutes.
When I ate aglio e olio at an Italian restaurant a while back, I noticed the sauce was blended. It was smooth and emulsified (almost creamy), completely different from the classic pan-tossed version. That was the moment the idea struck me. If you’ve been here for a while, you know I have a bit of an obsession with roasted garlic. So I couldn’t help but think… roasted garlic would be absolutely incredible in this.
I want to be clear – this is not traditional aglio e olio. The classic is raw garlic, olive oil, pasta water, chilli and parsley, tossed together in a pan. This is my version, inspired by that restaurant meal and built around my obsession with roasted garlic. It’s different. I think it’s better. But it is absolutely a twist.
WHY YOU’LL LOVE THIS
- Deeply garlicky without the sharpness — roasting transforms raw garlic into something sweet and caramelised, completely different in flavour from the original
- That blended sauce — smooth, silky and creamy without a drop of cream, just olive oil, roasted garlic and pasta water doing all the work
- Simple ingredients — spaghetti, garlic, olive oil, pasta water, parsley. That’s almost it.
- A twist on a classic — comforting and interesting
WHAT IS AGLIO E OLIO?
Aglio e olio (which means “garlic and oil” in Italian) is one of the simplest pasta dishes in existence. The classic Roman version uses raw garlic sliced thin and gently cooked in olive oil, tossed with pasta, pasta water, chilli and parsley. No cheese, no cream, nothing extra. It’s a pantry dish.
My version keeps the spirit of that simplicity but changes two things: the garlic is roasted whole until caramelized and the sauce is blended rather than tossed in a pan. The result is something that tastes more complex and feels almost luxurious… while still being made from almost nothing.
FOOD SCIENCE CORNER
How olive oil and pasta water become a creamy sauce without any cream
If you’ve read my Kitchen Guide on why pasta water makes sauce creamy, you’ll know that pasta water is rich in dissolved starch. That starch is the key to this sauce.
Olive oil and water don’t naturally mix because oil is hydrophobic (it doesn’t interact well with water). If you simply poured olive oil into pasta water and stirred, they’d quickly separate. But blending them at high speed breaks the oil into tiny droplets that become dispersed throughout the water. The starch dissolved in the pasta water helps stabilise this emulsion by thickening the liquid, making it harder for those droplets to merge back together.
Roasted garlic plays an important role too. As it roasts, its cell walls soften and break down, creating a smooth purée rich in soluble carbohydrates. When blended, the garlic adds body and viscosity. That helps the sauce to become even silkier and more cohesive.
The result is a sauce that looks and feels creamy. It’s thick, glossy and silky without any dairy at all. It’s simply olive oil, starchy pasta water and roasted garlic working together to create a stable, velvety sauce.
HOW TO MAKE IT
Please note: This is just an overview – the full ingredients and directions are in the recipe card at the bottom of this post.
1. Roast the garlic
Cut the top off both heads of garlic. Drizzle with olive oil, season with salt and pepper, wrap tightly in foil and roast at 190°C (375°F) for 35–45 minutes, until the cloves are completely soft and caramelized.
2. Cook the pasta
Boil the spaghetti in well-salted water until al dente. Before draining, reserve about 1 cup of pasta cooking water. This is essential for the sauce.
3. Blend the sauce
Squeeze the roasted garlic cloves directly into a blender. Add the olive oil and ¾ cup of the reserved pasta water. Blend until completely smooth and creamy. For a more intense garlic flavour, add 1–2 fresh raw garlic cloves at this stage.
4. Combine
Add the blended sauce to the cooked spaghetti and toss well until every strand is evenly coated.
5. Finish
Stir in the chopped parsley and season with salt to taste.
6. Serve
Serve immediately, topped with a pinch of cayenne pepper.
STORING AND REHEATING
This roasted garlic aglio e olio pasta is best eaten immediately. The sauce can separate slightly as it sits. If reheating, add a splash of warm water and toss gently to bring it back together.
FAQ
Is this the same as traditional aglio e olio?
No and I want to be upfront about that. Traditional aglio e olio uses raw garlic cooked in olive oil, not roasted garlic, and the sauce is tossed in a pan rather than blended. This is my twist, inspired by a restaurant version I tried. The spirit is the same – garlic, oil, pasta but the result is quite different.
Why does my sauce separate?
This usually happens if the pasta water was too cold when blending, or if the sauce sat too long before being tossed with the pasta. Work quickly once the sauce is blended. Add it to the pasta immediately while everything is hot and toss vigorously.
Can I use a different pasta shape?
Yes, linguine works just as well as spaghetti. Thinner pasta shapes generally work better here than short shapes.
Can I make this vegan?
It already is. There’s no dairy in this recipe as written.
More Roasted Garlic Recipes You’ll Love
If roasted garlic is your thing too (and it should be) these are next:
- Roasted Garlic Lemon Pasta with Crispy Chicken — another pasta built around roasted garlic, with crispy chicken on top
- Easy Roasted Garlic Soup — the most comforting thing you can make with five heads of garlic
- Roasted Garlic Potatoes au Gratin — roasted garlic in a completely different format, equally good
Roasted Garlic Aglio e Olio
Roasted Garlic Aglio e Olio is my twist on the Italian classic. Two whole heads of roasted garlic blended with extra virgin olive oil and pasta water into a smooth, creamy sauce, then tossed with spaghetti. It’s not traditional aglio e olio, but it’s deeply garlicky, silky and ready in 45 minutes.
2
servings5
minutes40
minutes620
kcal45
minutesKeep the screen of your device on
INGREDIENTS
200 g spaghetti
2 whole heads of garlic
1-2 fresh garlic cloves (optional, for extra flavor)
1/3 cup (80ml) extra virgin olive oil
3/4 cup (180ml) pasta water
Handful fresh parsley, finely chopped
Salt and pepper to taste
Cayenne pepper, for serving
DIRECTIONS
- Cut the top off a whole head of garlic. Drizzle with a little olive oil, season with salt and pepper, wrap in foil, and roast at 190°C (375°F) for 35–45 minutes, until the cloves are soft and caramelized.
- Boil the spaghetti until al dente. Before draining, reserve about 1 cup of the pasta cooking water.
- Squeeze the roasted garlic cloves into a blender or food processor. Add the olive oil and ¾ cup of the reserved pasta water, then blend until smooth and creamy. For a more intense garlic flavour, you can also add 1–2 fresh garlic cloves.
- Add the sauce to the cooked spaghetti and toss well until the pasta is evenly coated.
- Stir in the chopped parsley and season with salt to taste.
- Serve immediately, topped with a pinch of cayenne pepper.
Recipe Video
Notes
- This roasted garlic aglio e olio pasta is best eaten immediately. The sauce can separate slightly as it sits. If reheating, add a splash of warm water and toss gently to bring it back together.
- Nutrition is estimated and may vary depending on ingredients used. It should not be considered a substitute for a professional nutritionist’s advice.
Nutrition Facts
- Total number of serves: 2
- Calories: 620kcal
- Fat: 28g
- Carbohydrates: 78g
- Protein: 14g
Did you make it?
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Your feedback is valuable and helps me to continue creating delicious recipes that you will love.
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