Bring a large pot of salted water to a boil. Add the gnocchi and cook according to the package directions. Drain and set aside.

Set a medium saucepan over medium heat and add the butter. When the butter is melted, add the garlic and cook for 30 seconds, just until fragrant.

Whisk in the flour, then slowly pour in the heavy cream while whisking until smooth. Simmer for 2–3 minutes, until slightly thickened.

Stir in the spinach, salt, and black pepper. Cook for an additional 2–3 minutes, until the spinach wilts. Remove from heat and stir in the Parmesan until melted and creamy.

Gently fold the cooked gnocchi into the sauce until fully coated. Adjust seasoning to taste and serve warm.