Start by browning the ground beef in a skillet over medium-high heat for about 5-7 minutes, stirring occasionally until fully cooked. Drain the excess grease, then mix in the taco seasoning and diced tomatoes.

Preheat your oven to 375°F (190°C) and coat each muffin cup with nonstick cooking spray.

Press one wonton wrapper into each muffin cup, covering the bottom and sides well.

Spoon 1-2 tablespoons of the beef mixture into each cup and top with shredded cheese.

For a double layer, press another wonton wrapper on top of the filling, followed by adding more filling and cheese.

Bake the muffin tin in the preheated oven for about 12 minutes until golden brown and crispy.

Let the cups cool for a couple of minutes before removing them from the tin. Serve warm with toppings like sour cream or salsa.