01 -
Cook fettuccine in a large pot of boiling salted water following package instructions. Reserve 1/4 cup pasta water before draining.
02 -
In a large skillet over medium-high heat, warm olive oil and 1 tablespoon butter. Add sliced cremini mushrooms and cook for 5 minutes, stirring occasionally, until softened and juices begin to release.
03 -
Stir in minced garlic and sauté for 1 minute until fragrant.
04 -
Pour in white wine or white wine vinegar and scrape any browned bits from the bottom of the skillet.
05 -
Add remaining butter to the skillet and let it melt. Sprinkle in all-purpose flour and cook for 2 minutes, stirring constantly.
06 -
Gradually pour in vegetable broth while stirring until smooth. Slowly add skim milk and mix to combine. Bring to a gentle simmer over medium-low heat. Cook for 3–4 minutes, stirring occasionally, until sauce begins to thicken.
07 -
Reduce heat to low and stir in freshly shredded parmesan cheese until the sauce is creamy and smooth. Cook for 1 additional minute. Season with thyme, oregano, salt, and pepper to taste.
08 -
Remove skillet from heat. Add drained fettuccine to the skillet and toss to coat evenly with sauce. Gradually add reserved pasta water, one tablespoon at a time, until the sauce reaches desired consistency.
09 -
Top with additional fresh herbs if desired. Serve immediately.