Preheat the oven to 400 degrees.

Heat the olive oil in an ovenproof pan over medium heat. Add the onion and cook until translucent, around 5 minutes.

Add the mushrooms and cook until golden brown, around 2 minutes per side.

Add the fresh gnocchi, salt and Italian seasoning and stir to combine, cook for 2 more minutes or until the gnocchi is coated in the olive oil.

Stir in the pasta sauce and remove from heat. Top with the fresh mozzarella slices and take to the oven.

Bake for 25 minutes or until the cheese is fully melted and bubbly. Serve topped with Parmesan cheese and cracked fresh pepper.