Olivia Wilde publishes the recipe for a "special" vinaigrette

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Olivia Wilde seems to confirm her "special" dressing that a former nanny says scared her ex, Jason Sudeikis, or she's just trolling.

The actress/director posted an excerpt from rom-com queen Nora Ephron's memoir "Heartburn" -- which discusses a meal she cooks...including a salad. Ephron says there's a unique dressing she's learned, and Olivia seems to suggest it could be hers too.

Here is the recipe... 2 tablespoons of Gray Poupon mustard with 2 tablespoons of good red wine vinegar. While whisking with a fork, you add 6 tablespoons of olive oil until the dressing is creamy. It is said to be good for green vegetables like arugula, watercress and endive.

OW didn't add more context to his post — which was posted on his IG story — but on the face of it...it is, at the very least, acknowledging some of what his nanny alleged.

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Just a reminder...the wife, Erika Genaro, told DM that Olivia was making this dressing and a salad as she was getting ready to go see Harry Styles for dinner - which sparked Jason and the prompted to start filming her in their kitchen.