Mashed Potato and Meat Pie

8 medium potatoes
1 cup warm milk
2 Tbsp butter
2 eggs
1/2 cup mild cheese, grated
3 Tbsp cornstarch
3 Tbsp flour
1/2 tsp salt
2 tsp baking powder
thin slices of ham
thin slices of mild cheese such as mozzarella
1 tsp oil
2 Tbsp onions, finely chopped
1/2 lb ground beef or turkey (optional)
1 cup tomato sauce
pinch of salt
dash of pepper
1/4 tsp garlic powder (optional)

1. Peel and cook potatoes until soft. Drain and mash.
2. Add milk, butter, eggs, cheese, cornstarch, flour, salt and baking powder. Mix until smooth. Spread half of potato mixture in a greased 9x13-inch pan.
3. Cover with ham and slices of cheese.
4. Spread remaining potatoes over top and bake 30 minutes at 300.
5. While potatoes are in the oven, make the sauce. In a saucepan, brown onions and ground meat in 1 tsp oil. Drain any excess fat. Add and simmer tomato sauce, salt, pepper, and garlic powder.
6. Remove potatoes from oven, pour sauce over top, and continue baking 5-10 minutes.

Source: Extending the Table