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How to make Costco's Basil pesto butter salmon at home?

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Hi All,

This is my first post, so I hope this is the appropriate board.

We love a pre-made dish from costco - just a large fillet of salmon with a pesto butter molded into 3 little balls (about 1.5 inch diameter) that you take home and pop in the oven. I've long wondered how to make it because we prefer wild caught salmon and i think the pre-made dish is probably farmed.

Today I couldn't resist buying 2 large packages of copper river salmon for guests coming tomorrow evening and a jar of their pesto and some organic butter. I have googled this but haven't been certain which recipe I should try. Does anyone do on their own already or have any ideas? Would love any leads you might provide as to whether other ingredients are involved or ratios of the ingredients I have.

Thanks so much!

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  1. If I understand your question correctly, you're trying to make the pesto butter. I've never had the food you're trying to duplicate, but if it were me, I'd just soften the butter in the microwave then simply add the pesto and combine with a fork.

    As far as ratios go, again, I've never had the food you're trying to duplicate so I can't speak to that.

    1. I have no experience with this, but I did a little hunting around online out of curiosity. I think what you are talking about is called "salmon milano", and various recipes online include basil pesto butter (if not exactly the little pre-formed butter balls you are talking about). Costco actually publishes cookbooks that you can download online, but while they mention salmon milano, I didn't find a recipe for theirs.

      1. I believe it lists the ingredients for the butter mixture on the package. I would bring the butter to room temperature to soften, then add pesto and mix well. Roll the compound butter into a log shape on plastic wrap or parchment, then refrigerate for a couple of hours. Just slice off the amount you want to top each fillet, and you should be good to go. By the way, compound butters can be frozen and used when needed.

        1. The mix is costco pesto, butter, and sage. I got the recipe from a costco employee :)

          2 Replies
          1. re: GFree

            fabulous - thank you! I'm so excited to not have to make the trek to costco each time we're craving it :)

            1. Thank you all for the wonderful replies... I love the idea of freezing the compound butter and using as needed - so convenient!