Wiktionary
vb. (en-pastcook up)
Usage examples of "cooked up".
If she won it would all seem like a joke, something that Gus had cooked up to pass the time.
He was made a cook one day when the Captain happened to taste a stew he had cooked up for some black families who were at work building homes for the legislators.
Smell rabbit in Darras cook pot, and some sticky honey monstrosity cooked up by Beth on the hearth.
With a faint echo of the feeling he'd had for Israel Hands, Blackbeard wished for a moment that he'd cooked up some reason to send all of his crew away, to meet Spotswood's pirate-killers alone.
He took a shower, I cooked up a big platter of rice with all that was left in the house, Marylou sewed his socks, and we were ready to go.
Meanwhile he'd settled down here, hired a bunch of reasonably honest hands, and then he cooked up that Clover Three brand.
Hallenbeck says this is a little con game she cooked up, which, for all we know, she's been running for ages.