20 Best Foods for Fiber

4 Black beans

4

Black beans contain 15 grams of fiber per cup, and about 15 grams of protein. Their dark, rich color signals a high content of flavonoids, plant pigments that are powerful antioxidants. As you add beans and other high-fiber foods to your diet, be sure to drink more water, too, Brown says.

Try this recipe: Mexican Black-Bean-and-Spinach Pizza