Melt butter in a saucepan over medium heat. Stir in the flour and cook for 1 minute.
Slowly whisk in the milk until smooth. Bring to a gentle simmer, stirring constantly, until thickened.
Add seasonings and cheese sauce and stir until combined
Remove from heat. Stir in the cheese sauce and extra milk for consistency
Stir the pasta into the sauce. Pour into a small ovenproof dish, top with extra cheese.
Bake for 15-20 minutes.
