Simple microwave macaroni cheese

Tins, packets and jars

1 tbsp wholegrain or Dijon mustard (optional)

300g/10Â½oz macaroni

Cooking ingredients

salt and freshly ground black pepper

2 tbsp cornflour

Dairy, eggs and chilled

150g/5Â½oz mature cheddar, grated

350ml/12fl oz full-fat milk

Other

150g/5Â½oz frozen peas

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