12 Flour Tortillas at room temperature
1/2 Cup Olive Oil
1 Cup Sliced Mushrooms
1 Large Garlic Clove minced
2 Tbsp. Butter
2 Cups Finely Chopped Cooked Chicken
1-4 Oz. Can Green Chopped Chilies Drained
1 Cup Sour Cream
1 1/2 Tsp. Chilli Powder
1 Tsp. Ground Cumin
1/4 Tsp. Pepper
4 Cups Shredded Cheddar or Mexican Mix Cheese
2 Cups Sour Cream

Boil chicken breasts until cooked. Then cool and shred.

While cooling saute the onion, garlic, and mushrooms in large skillet until tender. Add the chicken, chilis, 1 cup sour cream, chilli powder, cumin, salt and pepper. Heat over low heat, stirring frequently until hot. Remove from heat.

Heat tortillas in the microwave. Spread a generous tablespoon of filling down the center of each tortilla, sprinkle with cheese, fold sides over filling and roll. Place seam side down in greased 9 X 13 in baking dish. Repeat with remaining tortillas. 

Bake in 350° oven for 15 minutes. Remove from oven and spread with the 2 cups sour cream and scatter the remaining cheddar cheese over the top. Bake 8 minutes more.