1Add 1 tbsp of butter and 1 tbsp of olive oil to large pan. Chop onion, celery, carrots, and mushrooms and throw in pan. Saute vegetables for about 5 minutes or until they become soft. Add a splash of white wine or chicken stock to give them a little flavor ( I added both). Sprinkle with salt and pepper, now add 5 tbsp of flour and stir until it bubbles. Slowly add chicken stock and keep stirring until smooth and has thickened. Add your sage. Stir until sauce begins to simmer - around 5 minutes. Pour in half and half, stir and taste. If you need more flavor, stir in a few tablespoons of chicken granules ( I used about 5 tbsp). Transfer chicken pie mix into a container and store it in refrigerator until your potatoes are done.
2Peel and cut potatoes, cook them in salted water for 15- 20 minutes or until they are soft. Drain them and put in bowl. Microwave the 1/2 stick of butter, heavy cream, and sour cream for about 30 secs or until soft and smooth.
3Pour cream sauce over potatoes, add salt and pepper to taste - I also added 1c of shredded cheddar cause I couldn't resist. Using you mixer, whip them up until light and fluffy.
I used a regular glass pie dish. Roll your pie crust into dish, pour in the chicken pie mix then dollop on the mashed potatoes. Sprinkle with a couple of pads of butter and salt and pepper.
Bake at 375º for 40-45 minutes until top is golden and crust looks done. Use a cookie sheet underneath in case it starts to bubble over. It was nice and creamy, I hate runny pot pies. This one was delicious!