Spray a mini muffin tin with nonstick cooking spray.
Press the wonton wrappers into the mini muffin cups. Bake for 8-9 minutes, or until tops are lightly golden brown. Set pans on wire racks to cool.
Meanwhile, using a medium saucepan, add the cream cheese, ranch dressing, hot sauce, black pepper and garlic powder. Place over medium heat, whisking often, until cream cheese has melted and mixture is smooth.
Remove saucepan from heat and add chicken, blue cheese, green onions, 1 cup of Monterey Jack cheese and 1 cup of cheddar cheese; mix until well combined.
Spoon chicken mixture into each wonton cup. Sprinkle remaining Monterey Jack and cheddar cheeses on top.
Bake for 4-6 more minutes, or until cheeses on top have melted.
Garnish with additional chopped green onions before serving. Serve warm.
Notes
You will likely have extra buffalo chicken dip left over after the wonton cups are filled. Serve with tortilla chips, celery and/or carrots!Instead of canned chicken, you can cook 2-3 boneless, skinless chicken breasts and shred the chicken. Mix shredded chicken into the dip in place of the canned chicken.