Place all the ingredients for your dressing in a blender and blend until smooth.
You can adjust the amount of milk to achieve your preferred dressing consistency.
In a large bowl, add your thawed/drained peas, crumbled bacon, and diced onion.
Pour your dressing over everything and gently toss to combine.
Refrigerate for at least 1 hour before serving, to allow the flavors to develop.
Enjoy!