Preheat oven to 350 degrees. Spray a 9x13 baking dish with cooking spray. Spread 1/2 of the finishing sauce into the bottom of the prepared pan.
In a medium sized bowl, combine the chicken and the creamy ranchero filling sauce. Stir well to combine.
In another bowl, combine the beans, corn and onion and stir well. Add chicken mixture to bowl and stir well.
Working one by one with each lasagna noodle, spread filling along the inside of the noodle, top with 1 Tbsp of shredded cheese and then roll up.
Place the rolled noodles in the prepared baking dish. Top with remaining finishing sauce and shredded cheese
Bake enchilada roll ups in a 350 degree oven for 20 minutes or until cheese is melted. Serve with sour cream, avocado slices and green onions.