Black Beans

One of Eat This, Not That's 8 Foods You Should Eat Everyday. All beans are good for your heart, but none can boost your brain power like black beans. That's because they're full of anthocyanins, antioxidant compounds that have been shown to improve brain function. A day 1/2 cup serving provides 8 grams of protein and 7.5 grams of fiber. It's also low in calories and free of saturated fat.
Substitutes - Peas, lentils, pintos, kidneys, fava and lima beans.
Fit it in - Wrap black beans in a breakfast burrito; use both black beans and kidney beans in your chili.

Source: Eat This, Not That