JoJo, 25, captured video of the evening, including plenty of conversations amongst the family and a few candids of Jordan and his eldest brother, Luke Rodgers.
The Bachelorette star also took to Instagram to share a snapshot of both her and Jordan's families together.
"My heart is so full!" she wrote. "Jordan and I were going out to what we thought was just a little dinner with friends but instead walked into a room full of both our friends and family to celebrate in our engagement. We are so incredibly blessed."
Noticeably absent from the love fest was Jordan's older brother, Aaron Rogers, whose estrangement from the family was a major topic on The Bachelorette.
Even without Aaron around, Jordan was feeling “blessed” to be with the rest of his family. In fact, he showed his gratitude in a touching Instagram photo with Luke.
"When you think you are just going to dinner with your fiancé and a few friends and you walk into a room full of both your families and best friends!," he wrote on Instagram. "So blessed to not only have found the love of my life @joelle_fletcher, but have an amazing family and new family to share a life with. So blessed to do life with these people!"
Hours before JoJo realized she was getting a party thrown in her and Jordan's honor, she posted video of the pair watching Netflix's Stranger Things in bed, plus a gorgeous shot of her very sparkly engagement ring.
Despite the love, things haven't been totally drama-free for the loved-up couple. Jordan's ex-girlfriend has been blasting him on social media, and it seems that she has no intentions of backing down. Find out more in the video below.