Step 1

Cover peeled potatoes with water and boil until tender. Drain.

Step 2

Mash potatoes until relatively smooth. Heat milk and butter in microwave for 1 minute. Add to potatoes. Season to taste with salt and white pepper.

Step 3

Preheat large skillet and add vegetable oil. Sauté onions in skillet until soft. Add mushrooms to onions and continue to sauté until browned. Add peas and carrots.

Step 4

In separate bowl, prepare gravy mix and water. Add to skillet along with beef and thyme. Stir and simmer until mixture begins to thicken. Season with freshly-ground pepper.

Step 5

Pour meat mixture into greased 1-1/2 quart casserole dish. Carefully spoon mashed potatoes on top and swirl. Sprinkle with paprika if desired and thin slices of butter.

Step 6

Bake in 350 degrees F oven for 20-25 minutes or until potatoes are golden on top and beef mixture is bubbly.