Cook gnocchi according to package instructions and save 1/4 cup of the water.
Melt butter in a skillet over medium-low heat. Then add pepper and flour. Mix together until mixture thickens and a paste forms, about 1-2 minutes.
Slowly pour in milk, stirring constantly. Allow sauce to cook in the pan for 5-8 minutes, until it thickens. Remove from heat and add pecorino cheese and garlic. Add reserved water to the sauce and stir constantly until the sauce is fully incorporated.
Add gnocchi and garnish with prosciutto and fresh basil.
Notes
Tips
Keep the heat low on this dish as if can burn quickly. Be patient as the sauce comes together.
Add the milk and cheese to the sauce very slowly so that the sauce doesn't clump together. Also, stir the sauce constantly while cooking for a smooth, silky, rich sauce.