Blanche the vegetables in a large pot of salted water.
Place a pot of water over medium-high heat then season generously with salt.
Trim the ends off the broccolini, asparagus and green beans.
Cook the vegetables (I prefer doing them separately as they have different cooking times) then remove with tongs and place in a large bowl of ice water.
Drain well and add to a serving platter.
Make the dressing by whisking together all the ingredients in a small bowl.
Taste and adjust seasoning if necessary.
Pour over the vegetables, toss to combine then crumble over the cheese and serve.