Sausage, squash and kale pasta bake

Name: Sausage, squash and kale pasta bake
Prep time: 30 min
Cook time: 1 h
Total time: 1 h 30 min
Cuisine: European, Mediterranean, Italian
Ingredients: 200g/7oz butternut squash, peeled, seeds removed and cut into 1.25cm/½in cubes; knob of salted butter; ½ tsp freshly ground black pepper; 2 Italian sausages, skin removed and broken into small pieces; 60g/2¼oz penne pasta; 20g/¾oz Parmesan, finely grated; 50g/1¾oz mascarpone; 60g/2¼oz kale, stalks removed