Italian Sausage and Mushroom Pasta Gratin

1. Add the cooked pasta to the sauce and mix until the pasta is fully coated in the creamy sausage and mushroom sauce. Make sure the pasta is evenly distributed and the sauce is well combined with the pasta.

Assemble the Gratin

1. Grease a 9×13-inch baking dish with cooking spray or a little butter. Pour the pasta and sauce mixture into the dish, spreading it evenly.

Make the Topping

1. In a small bowl, combine the panko breadcrumbs, melted butter, and Parmesan cheese. Mix until the breadcrumbs are evenly coated with the butter and cheese.
2. Sprinkle the breadcrumb mixture evenly over the pasta in the baking dish. This will create a golden, crispy topping when baked.

Bake to Perfection

1. Preheat the oven to 375°F (190°C). Place the baking dish in the oven and bake for 20-25 minutes, or until the top is golden brown and the sauce is bubbling around the edges.

Garnish and Serve