Slice the leeks thinly, including the tender green parts, and rinse thoroughly to remove any grit. Slice the mushrooms evenly to ensure uniform browning.
Bring a large pot of salted water to a boil. Add your pasta and cook until just shy of al dente, about 1 minute less than package instructions. Drain and set aside.
Heat a large skillet over medium-low heat and add the olive oil. Once shimmering, add the sliced leeks and cook gently, stirring occasionally. Let them soften and slowly turn golden, about 10-12 minutes, filling your kitchen with a sweet, caramelized aroma.
Add the sliced mushrooms to the skillet with the leeks. Cook, stirring occasionally, until they are golden and crispy at the edges, about 8-10 minutes. The smell should shift to a rich, earthy aroma.
Stir in the minced garlic and cook for another 30 seconds until fragrant. You’ll notice the aroma intensify and the mixture become even more inviting.
Turn off the heat and add the cooked pasta directly into the skillet. Toss gently with tongs or a spoon, allowing the flavors to coat the noodles evenly. Squeeze fresh lemon juice over the mixture for brightness.
Finish by sprinkling the freshly grated Parmesan cheese over the pasta. Toss again to combine and let the cheese melt slightly, creating a creamy finish.
Serve immediately, garnished with extra Parmesan or fresh herbs if desired. Enjoy this comforting, fragrant dish that beautifully showcases slow caramelized vegetables and perfectly cooked pasta.
