Effortless Caramelized Onion Cream

Featured in: Flavor-Boosting Sauces and Spreads

With some patience, onions turn super sweet and golden in a pan, making the base here. You’ll toss in garlic for a boost, pour in white wine to scoop up all the tasty brown bits, then mix in broth and heavy cream. Let it all get nice and silky so it hugs your noodles. Stir in Parmesan for a salty bite right at the end. Wild that it feels so fancy but literally uses basic stuff you’ve probably got. The trick is just letting the onions chill out and get deep brown and sweet.
A woman in a kitchen smiling.
By Chloe Chloe
Updated on Thu, 05 Jun 2025 15:09:09 GMT
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Caramelized Onion Pasta | cookitdelish.com

Turn basic pantry staples into a show-stopping meal that'll make you feel like a pro chef. Slowly cooked onions go sweet and golden, swirling into a creamy sauce that hugs every noodle. A sprinkle of savory Parmesan ties things together, giving you that cozy fancy-but-not-fussy vibe. This one’s comfort food but totally classy, easy enough for a Tuesday, but special enough for guests too.

This was my go-to dish one frigid night when all I had were onions and a couple of pantry bits. Watching the onions melt down into a glossy, rich sauce felt like pure kitchen magic. Since then, every time friends visit, they beg for this. The whole house fills with this cozy, sweet, oniony smell you just know means something tasty’s on the way.

Tasty Ingredient Guide

  • Pasta: Any long noodle (think spaghetti or fettucine) grabs every drop of sauce.
  • Fresh Parsley: Toss on for a bright pop of color and a zippy edge.
  • Parmesan Cheese: Grab real Parmigiano Reggiano for the best flavor punch.
  • Heavy Cream: Brings ultra-smooth richness.
  • Broth: Layers in plenty of cozy, savory vibes.
  • White Wine: Works in some tang and depth.
  • Garlic: Fresh garlic cloves add that must-have tasty kick.
  • Sugar: Just a hint gets those onions caramelizing faster.
  • Olive Oil and Butter: They work together for both flavor and the right cooking heat.
  • Large Onions: Sweet or yellow onions give you the best melt-in-your-mouth bite.

Simple How-To

Time to Mix:
Once pasta’s drained, throw it into the sauce. Splash in saved pasta water as needed to loosen things up.
Get Saucy:
Stir broth with heavy cream into the skillet. Let it gently bubble until it thickens up, then mix in Parmesan a bit at a time.
Pasta Prep:
Fill a pot, add a good bit of salt, and boil the noodles about a minute shy of what the box says. Don’t forget to save a little pasta water before draining.
Build That Flavor:
Toss in garlic, keep it moving for two minutes, then pour in white wine and scrape up any tasty browned bits.
Onion Slow-Cook:
Get butter and oil hot in a pan. Add the sliced onions with salt and sugar, and give them a stir every once in a while, letting them turn dark golden brown.
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Mouthwatering Caramelized Onion Pasta | cookitdelish.com

My grandma never made this without tossing in a couple kinds of onions. Her house always smelled amazing for ages after, and she swore that when your kitchen starts to smell super sweet and savory, your onions are perfect.

Awesome Pairing Ideas

This dish loves a snappy green salad dressed with olive oil and a hit of lemon juice. Team it up with broccolini or roast some asparagus. For parties, put out an appetizer platter and let folks scoop up the saucy leftovers with warm sourdough.

Tweak It Your Way

If you want to go lighter, swap in half and half for the heavy stuff. Use veggie broth if you’re keeping things meat-free. Toss in cooked shrimp, chicken, or crispy pancetta for extra oomph. Rehydrated dried mushrooms add earthy vibes. Gluten-free noodles fit right in with zero changes to the process.

Leftover Upgrades

Pop any extras in a sealed container in the fridge—they’re good for about three days. For leftovers, warm them gently on the stovetop with a splash of broth. Steer clear of the microwave unless you like gummy pasta. Got more leftovers? Whip up a pasta frittata or add extra broth to make a creamy soup.

Simple Caramelized Onion Pasta Pin it
Simple Caramelized Onion Pasta | cookitdelish.com

After cooking this more times than I can count, I’ve figured out really good onions make all the difference. This whole dish is proof that patience plus a few tricks can turn plain ingredients into something next-level good.

Frequently Asked Questions

→ How do I know when my onions are properly caramelized?
When your onions look really soft, turn a deep brown, and start to smell sweet, you’re set. Usually takes half an hour if you let ‘em go nice and slow.
→ Can I make this dish without heavy cream?
Yep! Swap in half-and-half or regular milk, but toss in 2 spoonfuls of flour to thicken. Sauce turns out lighter though.
→ What can I use instead of white wine?
More broth works if you add a hit of lemon juice or a splash of white wine vinegar for a little zip.
→ Can I make this ahead of time?
For sure. The sauce holds up for a day in the fridge. Heat it slow, add hot pasta, and you’re good.
→ What other cheeses work well in this pasta?
If you like, Romano, Asiago, or even Pecorino work instead of Parmesan, or just mix and match for extra flavor.

Effortless Caramelized Onion Cream

You get golden sweet onions melted into a creamy Parmesan sauce over pasta. It tastes like something at a fancy spot, but it’s seriously no fuss.

Prep Time
10 Minutes
Cook Time
45 Minutes
Total Time
55 Minutes
By Chloe: Chloe


Difficulty: Intermediate

Cuisine: Italian

Yield: 4 Servings

Dietary: Vegetarian

Ingredients

→ Base Ingredients

01 3 cloves garlic, finely chopped
02 ½ teaspoon salt
03 1 tablespoon butter
04 2 large onions, sliced thin
05 3 tablespoons olive oil
06 1 teaspoon sugar

→ Sauce Components

07 ½ cup of heavy cream
08 ½ cup of broth (vegetable or chicken)
09 ½ cup shredded Parmesan cheese
10 ½ cup white wine, optional but nice

→ Pasta and Garnish

11 Season with salt and pepper as needed
12 Freshly chopped parsley to top it off
13 12 ounces of pasta (spaghetti or fettuccine are great options)

Instructions

Step 01

Fill a big pot with water and lots of salt, then bring it to a boil. Cook pasta until it has a bit of bite left (al dente). Drain but save a cup of that starchy water in case you need it later.

Step 02

As the water heats up, put butter and olive oil in a deep pan on medium heat. Toss in sliced onions, salt, and sugar, stirring on and off. Let them cook slowly for 25-30 minutes, so they turn soft and sweet. Go slow for the best results!

Step 03

When the onions are golden and sweet, mix in the chopped garlic. Stir it around for a minute or two, just until you can smell how amazing it is. Don't let it overcook—it'll get bitter.

Step 04

Pour in the optional white wine, and hear that happy sizzle! Scrape up all the tasty bits stuck to the pan. Let the wine reduce until it's almost gone but leaves a bold flavor.

Step 05

Add the broth and heavy cream, stirring everything gently to mix it up. Let it simmer softly for five minutes, so it thickens slightly and picks up the golden oniony color.

Step 06

Stir in the Parmesan until it's fully melted into a creamy sauce. Taste it and tweak the salt and pepper to your liking.

Step 07

Throw the pasta into the sauce and give it all a good mix to coat every noodle. If things look too thick, add a bit of that reserved pasta water. Plate it up, top with parsley, and grate a bit of extra cheese over it if you’d like!

Notes

  1. To get the best sweet, rich flavor, don’t rush caramelizing those onions—patience makes the magic happen.
  2. Stop cooking the pasta when it's just firm enough, because it'll cook a little more in the sauce.
  3. Save a cup of pasta water so you can thin out the sauce if it gets too heavy at the end.

Tools You'll Need

  • Big pot to boil the pasta
  • A deep skillet or large sauté pan
  • Colander to drain the pasta
  • Wooden or silicone tool for stirring

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Has dairy (Parmesan, butter, cream)
  • Includes gluten (swap for gluten-free pasta if needed)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 510
  • Total Fat: 22 g
  • Total Carbohydrate: 65 g
  • Protein: 15 g