Heat olive oil in a small pan over medium heat.
Add onion and cook until onion has softened.
Remove from heat and allow to cool to room temperature.
Preheat oven to 400 degrees.
In a large bowl, whisk eggs, milk and seasoning together.
Stir cooked onion, cheese and imitation crab into egg mixture.
Pour into pie shell.
Bake for 40-50 mins or until a knife inserted in the center comes out clean.
Slice and serve.