01 -
Heat a splash of olive oil and butter in a large, heavy-bottomed pan over medium-low heat. Add your thinly sliced onions and let them cook slowly for 35-40 minutes, stirring frequently, until they turn a beautiful golden brown and become sweet and caramelized. This is the foundation of flavor, so don't rush this step!
02 -
Once your onions are perfectly caramelized, deglaze the pan with white wine (or a splash of beef broth if you prefer). Add the minced garlic and fresh thyme sprigs, letting everything cook together for a few minutes until wonderfully fragrant.
03 -
Add the uncooked pasta directly to the pan along with all the beef broth. Bring to a simmer over medium-high heat and cook for 15-20 minutes, stirring frequently, until the pasta is tender and most of the liquid has been absorbed into the pasta.
04 -
Remove the thyme stems (keep any loose leaves that fell off). Stir in the heavy cream and grated Parmesan cheese, cooking just until the cheese melts and the sauce comes to a gentle simmer. The result should be creamy and luxurious.
05 -
Garnish with additional fresh thyme and a generous sprinkle of Parmesan cheese. This makes a wonderful side dish or can be turned into a complete meal by adding grilled Italian sausage, salmon, or chicken on the side.