Herb & Dijon Salad Dressing Recipe. Are you looking for an easy fresh spring and summer salad dressing? This olive oil based dressing is full of the flavours of the season. Imagine an herb vinaigrette salad dressing with a hint of dijon, which is the perfect match for a leafy salad that uses up all the tastes of summer straight from the garden! If you have things growing all summer long, you will never need to buy another salad dressing again!