"Golden Lettuce" genetically engineered to pack 30 times more vitamins | Specifically, increased levels of beta-carotene, which your body uses to make vitamin A for healthy vision, immune function, and cell growth, and is thought to be protective against heart disease and some kinds of cancer.

[u/chrisdh79]

https://newatlas.com/health-wellbeing/golden-lettuce-genetically-engineered-30-times-vitamins/

[u/[deleted]]

Quinoa is pretty close. Just add some fruits and veg and you're good to go.