- Preheat oven to 375°F (190°C) and grease a 12-cup muffin tin. 
- In a skillet, brown ground beef over medium heat until fully cooked. Drain excess fat. 
- Add taco seasoning and water to the beef. Simmer until the liquid is mostly absorbed. 
- Press one wonton wrapper into each muffin cup. Add a spoonful of beef, a bit of salsa, and a sprinkle of cheese. 
- Layer a second wonton wrapper on top and repeat with more beef, salsa, and cheese. 
- Bake for 15 minutes until the edges are crispy and cheese is melted. 
- Top with sour cream and green onions before serving.