Wash the collard greens and remove any tough stems. Chop the collards into 1-inch pieces.
In a large skillet, heat the olive oil over medium-high heat. Add the onions and cook for 2 minutes. Add the garlic, red pepper flakes, salt, and pepper and cook for another minute.
Add the collards to the skillet and stir to combine. Add the vegetable broth or water and stir again. Bring the mixture to a boil and reduce the heat to low. Cover the skillet and simmer for 15 minutes, stirring occasionally.
Once the collards are tender, remove from the heat and serve.
Interesting Facts
Collard greens are a type of cruciferous vegetable and are related to kale, cabbage, and Brussels sprouts.
Collard greens are an excellent source of vitamins A, C, and K, as well as calcium and iron.
Collard greens are a staple in Southern cuisine and are often served alongside other soul food dishes such as black-eyed peas and cornbread.