Step 1

Cook pasta in large saucepan of boiling water, uncovered, until just tender; drain. Rinse under cold water; drain.

Step 2

Meanwhile, heat oil in large frying pan, add mushroom and bacon and cook stirring, until beginning to brown. Remove mushrooms and bacon from pan then add corn and cook, stirring, until browned all over.

Step 3

Make mustard dressing. Combine all ingredients in a small bowl or jug.

Step 4

Place pasta, mushroom mixture and corn in large bowl with onion, avocado, parsley and dressing; toss gently to combine.