Mac’n’Cheese with Salad Leaves

Name: Mac 'n' Cheese served with salad
Prep time: 5 min
Cook time: 25 min
Total time: 30 min
Ingredients: 300 g macaroni (or penne); 250 g grated cheese (cheddar or red leicester or both!); 18 g plain flour (about 2 tbsp); 30 g butter (about 2 tbsp); 1 pint whole milk; 2 slices bread (grated or chopped); 120 g salad leaves; 30 ml olive oil; 30 ml vinegar (any variety)