Step 1

In a blender, combine the lemon juice, olive oil, honey, mustard, salt, and red onion, and blend until smooth. Taste the dressing and adjust any seasoning, if needed.

Step 2

Add the poppy seeds and pulse the blender briefly, just enough to disperse them. Pour the dressing into an airtight container and store it in the fridge until ready to serve.

Step 3

Leftover dressing should last in an airtight container in the fridge for up to 5 days.