Place the squash in a heatproof bowl, add a splash of water and a pinch of seasoning, cover, and microwave on high for 5 minutes.
Alternatively, toss the squash with oil and seasoning, then air fry at 200°C for 12 minutes until soft and caramelized, or roast in the oven for 25 minutes.
Meanwhile, heat 2 teaspoons of oil in a large ovenproof frying pan over medium heat.
Fry the garlic for 30 seconds until sizzling but not browned. Add the spinach, season, and cook until wilted.
Once the squash is tender, mash half of it with a fork.
Mix the mashed squash and mascarpone into the spinach, add 150ml of water, and stir until the sauce is smooth and creamy.
Grate in nutmeg and add half of the Parmesan cheese.
Gently stir in the gnocchi and squash chunks until coated with the sauce.
Simmer for 1-2 minutes until heated through, adding a splash of water if the sauce is too thick.
Sprinkle with breadcrumbs and the remaining Parmesan.
Preheat the grill to medium-high and place the gnocchi under the grill for a few minutes until golden and bubbling at the edges.