Ingredients
Method
1.Cook pasta in a large saucepan of boiling water until just tender; drain, keep warm.
2.Bring stock to the boil in the same cleaned saucepan; cook garlic and mushrooms, stirring, until mushrooms soften and liquid evaporates. Stir in peas and half the onion; cook, stirring, until onion softens.
3.Add milk to pan; stir in blended cornflour and the water. Cook, stirring, over low heat until sauce boils and thickens slightly.
4.Remove sauce from heat; stir in pasta, remaining onion, parsley, mustard and cheese. Serve pasta sprinkled with chives. Season to taste.