Black beans and rice

This makes a great breakfast. (No, really.)

Start a cup of brown rice on the stove. (1 cup rice + around 1 3/4 cups water) While that's doing its thing, chop half a big onion, a few cloves of garlic, and a jalapeno, and saute that down in a little olive oil until tender. Add a can of tomatoes, with the juice, and the half-cooked rice, water and all. Bring that to a boil, add 2 cups cooked leftover black beans or 1 can, and let simmer on low until the rice is done. Remove from the heat and let sit for a few minutes before serving.

Filling, cheap, and with brown rice, nutritionally complete.