01 -
Bring a large pot of salted water to a boil. Cook the spaghetti according to package instructions until al dente. Drain thoroughly and set aside.
02 -
Heat olive oil in a large skillet over medium heat. Add breadcrumbs and cook, stirring often, until golden and crisp, approximately 3 to 5 minutes. Season with kosher salt and black pepper to taste. Transfer toasted breadcrumbs to a bowl and set aside.
03 -
Melt butter in the same skillet over low heat, adding one tablespoon at a time. Cook, swirling occasionally, until butter foams and develops a nutty aroma and golden-brown color, about 3 to 4 minutes.
04 -
Add minced garlic to the browned butter and cook for 1 minute, stirring until fragrant.
05 -
Stir in sliced cremini mushrooms and fresh thyme sprigs. Increase heat to medium and cook, stirring occasionally, until mushrooms are browned and tender, about 3 to 5 minutes. Season with salt and pepper. Remove thyme sprigs and discard.
06 -
Add the drained spaghetti to the skillet with the mushroom-butter mixture. Toss thoroughly to evenly coat the pasta.
07 -
Divide the pasta among serving plates. Top with toasted breadcrumbs and garnish with chopped parsley. Serve immediately.