In addition to being easy and yummy, this chili is very inexpensive to make and it's also very healthy.
1 Tbsp olive oil or canola oil
1 onion, chopped
1 cup frozen corn
1 15oz can black beans
1 15oz can diced tomatoes
1 Tbsp cumin
1 tsp oregano
Salt and pepper to taste
Cayenne pepper to taste, optional
Heat the oil in a pot and cook the onion until it starts to turn translucent. Add the corn and cook until heated through. Add the beans, tomatoes, cumin, oregano, and cayenne if desired. Simmer uncovered for 30 minutes stirring occasionally; if it gets too thick, put a lid on. If it's not thick enough, cook it longer. Top with cheese and sour cream. (unless you're vegan. :)