Earlier this week Kensington Palace released a video of Meghan cooking with the women in support of the new recipe book - called Together: Our Community Cookbook - which aims to raise money to support the local kitchen. The Duchess looked resplendent in a royal blue coat by Canadian brand Smythe, a black sleeveless top and pleated skirt by Misha Nonoo and black suede pumps from Sarah Flint for the occasion.
In a speech to guests, she said the project had been a "tremendous labour of love".
Markle's participation includes the support of the Royal Foundation, as well as the name recognition that comes with her face on the cover.
Meghan says she felt "embraced" by the women from the community kitchen after just moving to London.
Her mum, meanwhile, embraced each of the women with a warm hug, telling them: "It's unbelievable". The Duchess of Sussex stood behind a tabletop grill and helped cook while her mother and husband watched on proudly. "I could not be more excited about it and proud of you".
Meghan gave a three-minute speech without notes at the event, saying: "On a personal note I'm especially grateful because this is my first project so I appreciate your support for the vision that I had for this and seeing it come to fruition".
The proceeds of the cookbook will go towards supporting the kitchen - which is only open two days a week due to a lack funding - and will keep it open seven days a week.
The Duchess of Sussex put on an event to launch a cookbook for which she wrote the foreword.
The Duchess, who said she "immediately felt connected" to the kitchen at the Al Manaar cultural centre, first visited in January and has made other secret trips to the centre to meet volunteers and learn more about their work.
Meghan wrote the foreword to Together: Our Community Cookbook, which has already knocked JK Rowling off the number one spot on Amazon's bestseller list.
Her daughter also nailed it in the style stakes.