Habit Forming Potato Casserole

1/2 cup of vegetable oil
1 white or yellow onion, peeled and chopped
1/2 cup of sliced celery
3 - 4 T minced garlic (I use the stuff out of the jar, which really speeds things)
3 large carrots, peeled and chopped up fine
6 or 7 nice sized potatoes, peeled and cut into thick sticks
1 cup of peas
2 - 3 T dried parsley
2.5 teaspoons salt
1/2 teaspoon pepper
1/8 cup of white flour
1/2 cup of Soy milk or water

In a very large frying pan heat the oil over medium high heat and add the onion, celery, and garlic. Cook and stir until onions are golden brown. Add the carrots and cook for a few minutes longer and then add the potatoes, the peas and all of the spices. Cook for an additional 2 or 3 minutes, stirring. Sprinkle the flour over the potato mixture and stir to coat. Add the soy milk or water, a little bit at a time, stirring all the while, until you have a nice creamy sauce coating everything. Place all into a casserole and cook at 400 degrees for about 25 or 30 minutes, or until potatoes are nicely browned on top.