Cook gnocchi according to package. Drain and set aside.
Meanwhile, prepare your cheese sauce by melting the butter in a saucepan over medium heat. Add in the garlic and cook until fragrant, about 1 minute. Whisk in the flour and cook 1 minute. Stir in the milk and bring to a boil to thicken. Reduce to low and simmer for 3 minutes. Remove from heat and stir in cheeses. Season with salt and pepper.
Combine the gnocchi and sauce. Serve with parsley.
Notes
You can also top this with breadcrumbs and bake until crispy.
We love serving this as a weeknight dinner.