Preheat oven to 450 degrees
In a large bowl, mix together chicken, cheese, beans, corn, rotel tomatoes and chiles, red onion, green onion, sour cream and taco seasoning
Brush melted butter on cookie sheet, then layer on tortillas, overlapping sides with 2 in the center
Evenly distribute quesadilla mixture on top of tortillas
Place 2 tortillas in the center on top of mixture then fold over tortillas on the edges
Brush on the rest of melted butter
Place in oven with second cookie sheet on top of quesadilla
Cook for 30-35 minutes
Remove from oven and using a pizza cutter, cut quesadilla into slices
Add desired toppings, serve and enjoy
