Preheat the oven to 375 degrees F (190 degrees C). Spray a 24-cup mini muffin tin with cooking spray.

Heat a large skillet over medium-high heat. Cook and stir beef in the hot skillet until browned and crumbly, 5 to 7 minutes. Drain and discard grease. Mix in salsa and taco seasoning.

Line each muffin cup with a wonton wrapper. Add about 1 tablespoon taco beef to each cup. Top with 1 tablespoon shredded Mexican cheese blend.

Bake in the preheated oven until wonton wrappers are browned and crispy and cheese is melted, 12 to 14 minutes.