Preheat the oven to 350 degrees Fahrenheit. In a skillet, add the ground beef. As the beef is cooking, make sure to break it up into small pieces.

When the beef if almost done cooking, add the diced onion and cook until translucent.

Add the taco seasoning, salt, pepper, shredded cheese, and cream of mushroom soup to a large mixing bowl. Add the cooked beef and onion mixture and stir to combine.

Place one wonton wrapper into the bottom of each muffin cup. This makes approximately 24 cups. You can spray each cup with a bit of cooking spray if you think they might stick. However, I have not had a problem with the wonton wrappers sticking at all.

Spoon the meat mixture into the wonton wrapper filling each approximately half full. About 1 heaping tablespoon.

Bake for 25 minutes or until edges are browned and cheese is melted.

Top each taco cup with a small dollop of sour cream and a sprinkle of lettuce, tomatoes, and hot sauce if desired.