Creating Delicious Millionaire Gnocchi involves a few main stages: making the gnocchi and preparing the sauce. Follow these steps for an incredible result:

1. Boil Potatoes: Place the whole russet potatoes in a pot of salted water. Boil until fork-tender, about 30-40 minutes. Drain and let cool.
2. Make Dough: Once cool, peel and mash the potatoes until smooth. In a mixing bowl, combine the mashed potatoes, flour, egg, salt, and nutmeg (if using). Mix until the dough begins to form; avoid overworking it.
3. Shape Gnocchi: Lightly flour a clean surface. Roll hands into a long rope using the dough, about ½ inch thick. Cut the rope into 1-inch pieces, rolling each piece over a fork to create ridges.
4. Prepare Water: Bring a large pot of salted water to a gentle boil. Add the gnocchi in batches, cooking for about 2-3 minutes or until they float. Use a slotted spoon to remove them and set aside.
5. Make Sauce: In a medium pan, melt ½ cup of butter over medium heat. Add heavy cream and let simmer for 5 minutes. Stir in grated Parmesan cheese until melted and creamy.
6. Combine: Add the cooked gnocchi to the sauce. Gently toss to coat each dumpling, ensuring they are well covered in the rich sauce.
7. Season: Taste and adjust seasoning with freshly cracked black pepper and more salt if necessary.
8. Serve Immediately: Spoon the sauced gnocchi into bowls, garnishing with fresh basil.
9. Optional Addition: For a richer experience, dollop a spoonful of ricotta cheese over the gnocchi before garnishing.
10. Enjoy: Serve warm and enjoy the explosion of flavors from your Delicious Millionaire Gnocchi!