Ingredients
Method
Preparation
- Heat the butter and olive oil in a large skillet over medium-low heat. Add the sliced onions and a pinch of salt. Cook, stirring occasionally, for about 20-30 minutes until the onions are deep golden brown and caramelized.
- Once the onions are caramelized, add the garlic, stirring for about 1-2 minutes until fragrant. Then add the thyme and mix well.
- Pour in the beef broth and chicken broth, stirring to combine, and then season with balsamic vinegar, salt, and pepper. Bring the mixture to a simmer.
- While the sauce simmers, cook the pasta according to package instructions in a large pot of salted boiling water. Drain and set aside.
- Combine the drained pasta with the onion broth mixture, stirring to fully coat the pasta with the delightful sauce. Allow it to heat together for 3-5 minutes.
- Once heated through, sprinkle the Gruyère cheese on top of the pasta. Cover the pan and let it sit on low heat for an additional 3-5 minutes or until the cheese melts.
Serving
- Serve warm, garnished with fresh parsley, if desired.
Notes
Don’t rush the onions: Caramelizing them properly will unlock their sweet flavor. For a quicker option, you can use pre-cooked pasta. Store leftovers in an airtight container in the fridge for up to 3 days. Reheat on the stovetop over low heat, adding a splash of broth if it seems dry.
