- In a skillet over medium heat, cook the ground beef until browned, about 5-7 minutes. Drain any excess fat. Stir in the taco seasoning and cook according to package instructions, usually about 2-3 minutes. Remove from heat and let cool slightly. 
- While the beef is cooling, heat oil in a deep pan or fryer to 350°F. 
- Take a wonton wrapper and gently press it into a muffin tin to form a taco shell shape. Repeat with remaining wrappers. 
- Fry the wonton shells in the hot oil for about 1-2 minutes or until golden brown and crispy. Remove and drain on paper towels. 
- Once the wonton shells are cool enough to handle, fill each shell with the seasoned ground beef, then top with shredded cheddar cheese, lettuce, diced tomatoes, a dollop of sour cream, and a sprinkle of green onions. 
- Serve immediately and enjoy your crispy wonton tacos!