Creamy Tomato Garlic Butter Shrimp

| 300 g dry weight linguini ((or any pasta))

medium yellow onion diced

butter ((or olive oil))

garlic cloves (, minced)

| 500 g raw jumbo shrimp ((prawns), peeled and deveined)

dried basil

salt (, divided)

x 14-ounce | 400 g bottle passata or marinara sauce

half a chicken bullion cube (, crushed (or 1 teaspoon stock powder))

fresh chopped parsley

freshly-ground black pepper (, divided)

granulated sugar

milk ((or half and half or heavy cream))

grated Parmesan cheese (, to serve)

extra fresh chopped parsley (, to serve)