Preheat oven to 450 degrees. Grease a 10 inch pie pan with butter.
In a bowl, combine biscuit mix and milk and pat dough into the prepared pie pan. Bake crust for 5 minutes in preheated oven. Turn oven temperature to 325 degrees.
Lay sliced tomatoes into pie shell; sprinkle with fresh butter and olive oil and allow butter to melt. Carefully, add potatoes and, using a spatula, turn potatoes oven and over until potatoes are coated well with butter/oil mixture. Continue cooking and stirring until potatoes get browned and begin to crisp. Add chopped onion and green pepper and seasonings.
Reduce heat and add water to pan. Cover and cook over low heat until potatoes are tender. Remove cover and cook until potatoes are crisp again. Makes 6 to 8 servings. Enjoy!