Green Beans Au Gratin - cooking recipe

Ingredients

1 lb. fresh green beans or 2 cans prepared (I use qt. jar home-canned beans)
1/4 c. margarine
3/4 c. all-purpose flour
1 tsp. salt (omit if using home-canned beans)
1/8 tsp. dry mustard
1 1/2 c. milk
1/2 c. shredded Swiss cheese
1 1/2 Tbsp. grated Parmesan cheese
1/2 c. slivered almonds
paprika

Preparation

If using fresh green beans, wash, string and break into 1 1/2-inch pieces.
Cook, covered, until tender (about 25 minutes). Drain and set aside.