First, if using the black beans and corn, prep those then have them sitting to the side.
In a frying pan, add in the ground beef and brown it all the way. Then, prepare the taco seasoning mix according to the package instructions.
After you add the seasoning mix, this is where you toss in the black beans and corn. The taco seasoning will come together and thicken everything.
Next, on a skillet on medium heat add a little oil or butter. Place the tortilla down then add shredded cheese to one side. Then, spoon some of the cooked hamburger meat on top of the cheese. Now, add cheese on top of the hamburger meat and fold the other side of the tortilla on top. You should now have both sides with cheese and the meat in the middle.
Allow the tortilla to cook and the cheese to melt. Then, flip the quesadilla over to melt the cheese and brown the other half. Once that side is done the quesadilla is ready to serve.
Serve as is or add some fresh ingredients like diced tomato and cilantro.