Her name was Grandma. That's all we know. Back then she was apparently the oldest person alive then, at the age of 139. Her name has been lost with age.
She had invented a new kind of cookie. No one knows how she made it. She was very intelligent, but she had many mental problems as well. Schizophrenia was reported as one of them. At first nobody would try them. Who takes cookies from a creepy old lady across the street? Then her granddaughter tried one. She called it the most delicious thing she had ever tasted.
So, she decided to give one to each of her co-workers. They loved them. They then passed them on to their families, then so on. Sooner or later, the entire town was affiliated with the cookies. Tourists came in, and were surprised when they were given cookies. Grandma became the mayor.
Soon, other towns grew curious of these cookies, and Grandma began shipments to the other towns. Soon, Missouri became the most well-known state of America, with it's delicious cookies. Grandma then mesmerized America by discovering a way to farm cookies. More shipments traveled all across America. Factories emerged, then mines. No one questioned why we needed entire mines and factories to make these cookies. They only ate them.
Then Grandma somehow persuaded the President to send space shuttles to the Moon. Some say she paid him off with cookies. Everyone became brainwashed with the idea that the Moon was a 'cookie planet'. Scientists claim that there was an ancient element on the Moon used to create these cookies. She was 150 at the time.
Now you may be thinking, 'what the hell was in these cookies that needed to be farmed and mined and shipped from the Moon?'. Well, nobody knows the actual ingredients in the cookies to this day. Some say she used a brainwashing, addictive chemical that kept us eating more regardless of what was in them, that masked the real taste. For all we know, we were eating dog feces.
So, he sent the 'Rolling Pin' to the Moon, where it picked up hundreds of pounds of moon rock. It came back to Earth, where Grandma used the 'secret ingredient' to make more cookies, and send them to her factories and mines.
Note that all of the workers in the factories and mines were all females over 60 years of age. Everyone else was ineligible to work. They were paid in cookies.
Soon shipments began flying all across the world. Wars stopped, conflicts halted. All for the cookies. Everyone thought they had finally solved world hunger, and world peace.
Oh, they only made it worse.
The Moon began turning an ominous shade of brown. The entirety of Earth began to become one big cookie world.
Then a portal was discovered. Grandma herself was surprised, at the age of 185. They sent expeditions inside. All that came out were a bunch of cookies. The entire team never came out. Rather than seeing danger, Grandma saw cookies, and sent more people in. This then became public; not the people disappearing part.
More portals began appearing at the other factories and mines. Tourism was not allowed.
Then the workers at the factories began disappearing. Their cats, gone. So, Grandma, 200 years old now, went inside one herself. She was very eager to do it. So, they sent her in.
Days later, the town where it all started, was destroyed. No one escaped, no one knew how it happened. That was when the panicking started.
Then creatures began popping out of the portals. They resembled elderly women, but they were demonic. Their eyes were red, and they were no longer slow-moving and sluggish. They were fast.
And they were hungry, and not for cookies.
For people.
When Grandma came out, we realised what the cookies were for. She had been planning this end-world event from the beginning. The cookies were there to summon this 'Grandmapocalypse'. She was so old, and she was still alive, BECAUSE OF THE COOKIES.
And yes, that's what everyone called it. Grandma called herself the 'Grandmatriarch'.
They targeted the main world leaders first. Then their governments. Entire countries were being ransacked, and nobody knew what to do. The creatures didn't even look like grandmothers anymore. They were blobs of flesh, killing and devouring everything in their way. Half of the world population was dead.
And now, here we are. 100 years after the first cookie. Nothing has changed.
I have deduced that the creatures are demonic entities that took control of the workers' bodies. All they want is to kill us.
I am alone, in an abandoned cookie factory. The mauled bodies of others are around me, and they smell of chocolate chips.
I can hear the Grandmatriarch now. I can hear the creatures. They can smell me.