The actress - who has two daughters, Rowan Francis, eight, and Grier Hammond, five with her husband Chris Henchy - revealed she would "die" to have more kids although her spouse is not so keen on the idea.
She told E! Online: "I would die for one. Unfortunately, my husband is not as amenable. So I either have to trick him or lie to him to get knocked up.
"He said to me the other day, `I`m beginning to think that if I don`t give this to you, you`ll do it on your own`. Yeah, it`s like, `Don`t test me. I`m very independent.` But I`m older so my eggs probably need a chisel."
Brooke hasn`t ruled out adding to her family by adopting because she feels it would be a good idea to be more "altruistic".
She said: "Maybe I should wait and then adopt. We have a lovely home and life and I want to be able to share it with a big family. But maybe it`s supposed to be done in a different way, an altruistic way."
Brooke also revealed her daughters have yet to reveal what they want from Santa Claus for Christmas.
She explained: "I think it`s because they just discovered that Santa was not free. The other day we were looking at a gingerbread house and my younger daughter said, `I want one of those! Why don`t we get our own gingerbread house?` I said, `Well, honey, you know they don`t just appear. Even if you ask Santa for them you have to pay for them.` I think that totally changed their lists."