Instructions for Perfect Mushroom Pasta

• Bring a large pot of salted water to a boil, then add the pasta. I do this at the same time that I start cooking the mushrooms. This ensures both components are ready simultaneously, maximizing the pasta’s ability to absorb the sauce.
• Cook pasta per packet instructions, but reduce the cooking time by 1 minute. Before draining, reserve 1 mugful of the pasta cooking liquid. I've learned that slightly undercooking the pasta allows it to finish cooking in the sauce, resulting in a more flavorful bite. And that reserved pasta water? It's liquid gold for creating a creamy emulsion.
• Melt half the butter and all the olive oil in a large skillet over medium heat. The combination of butter and olive oil adds richness and prevents the butter from burning.
• Add the sliced mushrooms and cook until their water has leached out and evaporated, and the mushrooms start to turn golden around the edges, usually around 5 minutes. Early on, I made the mistake of overcrowding the pan, which resulted in steamed, soggy mushrooms. The engineering principle here is surface area and heat: the mushrooms need space to release their moisture and for that moisture to evaporate efficiently. A wider pan, or cooking in batches, ensures proper browning and a more concentrated flavor.
• Add salt and pepper about halfway through the mushroom cooking process. Seasoning early allows the flavors to penetrate the mushrooms as they cook.
• Add the minced garlic and remaining butter. Cook for an additional 2 minutes, until the mushrooms and garlic are golden and fragrant. Cooking the garlic towards the end prevents it from burning and becoming bitter.
• Add the cooked pasta, about 3/4 cup of the reserved pasta water, and the parmesan cheese to the skillet. Toss gently until the water reduces and thickens into a saucy glaze that coats the pasta. If the pasta starts to dry out, add more pasta water, a little at a time. The starch in the pasta water helps bind the sauce and create that desirable creamy texture without the need for heavy cream.
• Taste and add more salt and pepper if needed. Seasoning is subjective, so trust your palate and adjust accordingly.
• Remove from the stove and serve immediately, garnished with fresh parsley and grated parmesan cheese. Fresh herbs add a pop of brightness and visual appeal.