"Being a dad is in your eyes and soul, it’s your calling," the actress added of her partner. "We love and appreciate you so much!!"

As for her own dad, Cuoco wrote, "The best there is! We couldn’t love you more, and Tildy loves her Bampa!!! 🩵"

The Based on a True Story star concluded the tribute with a sweet message: "I feel so lucky to have you both!"

The post featured several images snaps of Cuoco, Pelphrey and Matilda, including ones of them cuddling together in a bed and Pelphrey holding the toddler in his arms while Cuoco hugged both of them. The carousel also feature snaps of the family of three with the actress' dad Gary.

"Being a dad is in your eyes and soul, it’s your calling," the actress added of her partner. "We love and appreciate you so much!!"

As for her own dad, Cuoco wrote, "The best there is! We couldn’t love you more, and Tildy loves her Bampa!!! 🩵"

The Based on a True Story star concluded the tribute with a sweet message: "I feel so lucky to have you both!"

The post featured several images snaps of Cuoco, Pelphrey and Matilda, including ones of them cuddling together in a bed and Pelphrey holding the toddler in his arms while Cuoco hugged both of them. The carousel also feature snaps of the family of three with the actress' dad Gary.