Caramelized Onion Pasta
- November 7, 2025
- 0 Comments
- Dinner
The perfect jammy caramelized onions melt into a creamy, golden pasta with sautéed garlic, warm spices, and a little chili crisp that ties everything together so well ᝰ.ᐟ
I might just have to push all other pasta recipes to the side for a while, because I am quite obsessed with how this came out !! as an onion lover, I honestly think this is the best pasta I’ve made in some time. Three large yellow onions, slowly cooked down into the perfect jammy caramelized onions for about 40 minutes, fresh garlic, lightly toasted spices, and chili crisp!! Then I brought it all together with a bit of pasta water to emulsify and a happy amount of crème fraîche to make it a bit more creamy
I really wanted the flavor of the caramelized onions to pull through, and I didn’t want to mask it with heavy creams or seasonings. I felt like the crème fraîche added the perfect amount of creaminess and a bit of tartness without taking away from all the flavor we built while caramelizing our onions, and I genuinely am now so obsessed … I must make this every week !!
Few tips ᝰ.ᐟ
- Keep an eye on your onions, and don’t rush them. Commit to the process! The longer and lower you cook them, the sweeter and deeper the flavor gets. rushing this step will give you browned onions, not caramelized ones
- If the bottom of your pan starts to brown, just splash in a little water or stock and scrape it up. But try to be mindful of how high your temp is, low and slow for caramelized onions!
- The final saltiness depends on your pasta water, your chili crisp, and your parm, so always taste before adding more.
- Always reserve extra pasta water (more than the recipe recommends). Your pasta keeps thickening as it cools, so having more on hand lets you loosen the sauce if it tightens up while serving.
- This reheats beautifully with a splash of water or stock and a tbsp of butter over low heat.
Here’s a video to guide you along the process ✮⋆˙
Process ✮⋆˙
Caramelized Onion Pasta
Ingredients
Caramelized onions
- 3 large yellow onions
- 1/3 cup olive oil
- 3 tbsp salted butter
- 1 tsp sugar
- 1 tsp fine sea salt
- 1 tsp white pepper
- 1 tsp garlic powder
- 1 tsp onion powder
- 2 tbsp chili crisp
Pasta & Sauce
- 1 lbs spaghetti
- 6-8 cloves garlic, minced
- 40 grams parmesan, freshly grated
- 2 tbsp salted butter for finishing
- 8 oz creme fraiche
- 2-3 cups reserved pasta water
- chopped parsley for garnish
Instructions
- Bring a large pot of water to a boil and season generously with salt. Cook the pasta until just al dente. Before draining, reserve 3 cups of pasta water.
Caramelized onions
- slice your onions thinly and evenly so they cook at the same rate. Dont dice. long slices caramelize more beautifully and develop a wonderful jammy texture
- heat a large, wide stainless steel or cast-iron pan over medium heat. Add the olive oil and butter. Once the butter melts a bit, add all the onions, salt, and sugar.Stir well to coat the onions in fat, then reduce the heat to medium-low
- continue cooking for 35–45 minutes, stirring every few minutes. The onions will go from translucent, to pale golden , down to a deep amber
- If brown bits form on the bottom, deglaze with a tablespoon of water or stock and scrape them up, that’s still flavor !
- in the last minute, throw in your minced garlic. Sprinkle in the white pepper, garlic powder, and onion powder. Stir to coat and let the spices bloom in the residual oil from our onions
- after a minute, stir in the chili crisp. Let it sizzle for 30–60 seconds to release its flavor into the caramelized onions
Sauce
- Stir in the crème fraîche and two cups of your pasta water, mixing until creamy and emulsified
- Add the al dente pasta directly into the pan and toss everything together over low heat. Add more pasta water as needed until the sauce is glossy and coats the noodles beautifully (this is where you decide if you want to add the full extra cup of pasta water depending on how saucy you'd like your pasta)
- turn off the heat, then stir in your parmesan and two tablespoons of butter for a beautiful, silky pasta. turning the heat off keeps the cheese from clumping, letting it melt smoothly into your sauce, while the butter adds a glossy shine without needing more heat to melt
- taste, and adjust salt
- (i personally added about 2 tsp of fine sea salt when I mixed in the last of my pasta water, but the final saltiness depends on your pasta water, your chili crisp, and your parm, so always taste before adding more)
- garnish with freshly chopped parsley, and a drizzle of you chili crips oil
- and you're done!
