- STEP 1
Melt butter in a saucepan, add flour, salt and pepper. Stir well over a low heat and form a smooth paste.
- STEP 2
Gradually add the milk, continually stirring, until smooth and runny.
- STEP 3
Raise the heat and bring to the boil, stirring constantly, making sure that you cover the bottom of the pan to stop any sticking.
- STEP 4
When it reaches boiling point, lower the temperature and simmer gently for a couple of mins. Cover and set aside.
- STEP 5
In a large pan of boiling water, add the pasta and cook for recommended time (see packet). Drain well and place back in saucepan.
- STEP 6
Pour sauce over pasta and mix well.
- STEP 7
Drain the tinned tuna and mix gently into the pasta and sauce.
- STEP 8
Spoon the mixture into an ovenproof dish and sprinkle topping. Bake at 190 degrees Celsius to heat through and brown the top.