Potato, Sausage and Leek Gratin

4 c Diced red potatoes*

1 x Salt & pepper

2 tb Flour, more if necessary

1 x Milk

1 x Chopped chives

1 c Finely chopped leeks*

1/2 c Finely chopped green onions

1/2 lb Smoked sausage

1/2 c Bread crumbs

1/4 c Butter; cut into sm. pieces

*Note: Potatoes should be unpeeled. Use only white part of leeks. Spread l/2 Potatoes, leeks and green onions in bottom of buttered casserole or baking dish. Sprinkle with salt, pepper and l l/2 tbs. flour. Add sausage, hen spread remaining Potatoes, leeks and green onions on top. Season to taste with salt and pepper. Sprinkle with remaining flour. Pour over enough milk just to cover mixture. Sprinkle bread crumbs over top. Dot with butter. Cover and bake at 375 degrees until Potatoes are tender, about l hour. Remove cover, and bake l5 to 20 minutes longer or until top is brown. Sprinkle with chopped chives just before serving.