Preheat the oven to 375℉. Wrap a large sweet potato in tin foil and bake for 1 hour or until it is tender and can be easily mashed.
Prep the remaining ingredients and remove the corn from its ear. Slice the onion and red bell pepper into uniform-sized strips (julienne. Rinse and drain your black beans, and set them aside.
In a skillet over medium heat, add about 1 TBSP of a neutral cooking oil, such as canola or vegetable oil. Add the peppers and onions to the pan and sautee for 3-5 minutes or until the onions turn translucent. Add the cumin, chili powder, and salt.
In another skillet, add 1 tsp of oil. Allow it to heat, then lay 1 whole-wheat tortilla down. Add ¼ cup of the shredded cheese along with a spoonful of corn, black beans, and some of the peppers and onions. Close the quesadilla and allow it to brown on both sides.
Serve while it is hot, with a side of fresh avocado, sour cream, and salsa, and garnish with cilantro.