01 -
Crank the oven to 400°F. Get a 9x13 inch baking dish and lightly coat it with cooking spray. Set it aside for now.
02 -
Throw your chicken, the drained tomatoes, green chiles, taco seasoning, and about 3/4 cup of the shredded cheese into a bowl. Give it a good mix until blended evenly.
03 -
In a medium pot over low heat, melt the butter. Stir in the flour and let it cook until bubbly. Slowly add the chicken broth, stirring all the time until it starts boiling. Remove from the heat and stir in the sour cream until smooth and creamy.
04 -
Pour just a thin layer of sauce at the bottom of the greased dish to prevent sticking.
05 -
Take about half a cup of the chicken mix, place it in the center of a tortilla, roll it up tight, and line it seam-side down in the sauce-coated dish.
06 -
Spoon the rest of the sauce over the rolled tortillas, spreading it evenly to coat everything. Sprinkle the leftover shredded cheese on top.
07 -
Pop the dish, uncovered, into the hot oven. Let it bake for around 20 minutes, or until the cheese is bubbly and melted, and the edges are slightly browned.