By  Brian Faulkner  On

Three Onion Casserole

This casserole is pure goodness – the secret is the Boursin cheese.  Make it a staple for Thanksgiving dinner.

Three Onion Casserole
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  1. 3 tbsp butter
  2. 2 BCfresh red onions, thinly sliced
  3. 2 BCfresh yellow onions, thinly sliced
  4. 4 leeks, well rinsed, thinly sliced
  5. Salt and freshly ground pepper
  6. 1 ½ cups Havarti cheese
  7. 2 pkgs Boursin cheese
  8. 1 ½ cups Gruyere cheese
  9. ½ cup dry white wine
  1. In a baking dish buttered with 1 tbsp butter, make layers using a third of each of onions and leek. Sprinkle lightly with salt and pepper. Top with Havarti. Then, add another layer of onions and top with Boursin and then a final layer and top with Gruyere. Pour wine over and dot with butter. Bake at 350°F for 1 hour.
BCfresh Vegetables

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BCfresh and our grower partners can confirm that onions packaged as Bestfresh Chefs Reserve 10lb Onions are not included in the recall as they are NOT SOURCED from Thomson International (Bakersfield, California).

Our Bestfresh 10lb Onion packaging is a black mesh bag with gold label with UPC 7-75058-50108-2 – they are Washington onions sourced from completely different grower/packer and are safe to consume. 

If you have lingering concerns regarding the safety of Bestfresh Chef’s Reserve 10lb onions, we recommend you dispose of the product or return to Costco for a full refund.

For more information regarding the recall please visit CFIA at