Step 1

Set up your grill for indirect heat. If using a charcoal grill, build the coals on one side only. If using a gas grill, heat one side only.

Step 2

Bring a large pot of salted water to a boil on the direct heat side of the grill and cook the pasta 3 minutes less than the package directions. Place a large sauté pan over the direct heat side of the grill. Add the butter and once melted, add the mushrooms and a pinch of salt. Stir and cook for 1 minute so the mushrooms soak up some of the butter. Then add the onions, garlic and thyme. Stir and cook until the onions are translucent and the mushrooms are slightly browned, 2 to 3 minutes. Stir in the flour, coating all of the vegetables. Deglaze the pan with the marsala, smoothing out any lumps. Stir in the vegetable stock and milk. Season with salt, pepper and nutmeg and bring to a simmer.

Step 3

Add the cooked pasta, parsley and mushroom marsala mixture to an extra-large mixing bowl. Mix to combine well, then transfer back to the sauté pan. Top with the mozzarella and Parmesan. Place the sauté pan on the indirect heat side of the grill, close the grill with the lid and bake until the cheese is melted and golden brown in some spots, 3 to 5 minutes. Remove from the grill and serve!