In a large pot, bring salted water to a boil. Add the gnocchi and cook according to package instructions until they float to the top. Drain and set aside.
In a large skillet, heat the olive oil over medium heat. Add the minced garlic and sauté for about 1 minute until fragrant.
Add the chopped spinach to the skillet, stirring until wilted, about 2-3 minutes.
Lower the heat and add the ricotta cheese and heavy cream to the skillet, stirring until combined and smooth.
Stir in the grated Parmesan cheese, lemon zest, salt, pepper, and nutmeg (if using). Allow the mixture to simmer for another 2-3 minutes until slightly thickened.
Gently fold in the cooked gnocchi, ensuring each piece is coated in the creamy sauce.
Cook for an additional 2-3 minutes until heated through. Adjust seasoning if necessary.
Remove from heat and serve immediately.
Notes
Serve in shallow bowls with extra Parmesan and fresh spinach leaves for garnish.