In a large pot of boiling salted water, cook the gnocchi according to package instructions until they float to the top, usually about 2-3 minutes. Drain and set aside.
In a large skillet over medium heat, melt the butter. Add the minced garlic and sauté for about 1-2 minutes until fragrant, being careful not to burn it.
Pour in the heavy cream and bring the mixture to a gentle simmer. Stir occasionally for about 2-3 minutes.
Gradually add the Parmesan cheese and Italian seasoning, stirring continuously until the cheese is melted and the sauce is creamy. Season with salt and pepper to taste.
Gently add the cooked gnocchi to the skillet, stirring to coat them well with the creamy sauce. If using, add the fresh spinach at this stage and stir until wilted.
Once everything is combined and heated through, remove from heat. Garnish with chopped parsley before serving.
Notes
Serve in shallow bowls with extra Parmesan and parsley for garnish.