Is the Big Bang a Bubble in the Peanut Butter?

Is the idea that like the universe as we see it, now suddenly appeared? Or that the big bang initially is one of these bubbles in the peanut butter. It's not that we're all being fooled and thinking that the universe existed and that it just actually popped into existence right now with this apparent history. The probability that you're not a boltsman brain, but like an actual brain, seems very vanishingly small.