01 -
In a large skillet, heat olive oil and butter over low to medium heat. Add the sliced onions and caramelize them slowly for 20 minutes, stirring occasionally until they turn a deep golden brown and release a sweet aroma.
02 -
Stir in the chili oil until well combined. Pour in the heavy cream, sprinkle in garlic powder, salt, and pepper, and let the mixture simmer gently for 5 minutes to meld the flavors.
03 -
Cook pasta according to package instructions until al dente. Drain the pasta and reserve some starchy pasta water.
04 -
Add the drained pasta and reserved starchy pasta water to the skillet with the sauce. Simmer on medium-high heat for 2 minutes, stirring occasionally to evenly combine.
05 -
Turn off the heat, sprinkle freshly chopped parsley over the pasta, and add a teaspoon of salt if needed. Let it cool for a couple of minutes before serving.