Salmon Strata
["1 (15 1/2 oz.) can salmon", "8 slices bread", "1/2 lb. sharp Cheddar cheese, shredded", "1 (10 oz.) pkg. frozen chopped spinach, thawed and drained", "4 eggs", "2 1/2 c. milk", "1 Tbsp. chopped onion", "3/4 tsp. salt", "1/8 tsp. pepper", "1/4 tsp. dry mustard"]
["Drain and flake salmon, reserving liquid.", "Trim crusts from 5 slices of bread, cut in half diagonally.", "Use remaining 3 slices and trimmings to line bottom of baking dish.", "Sprinkle with 1/3 of cheese.", "Spread flaked salmon over cheese.", "Spread spinach over salmon.", "Sprinkle with 1/3 of cheese.", "Arrange bread triangles, overlapping on top of cheese.", "Beat eggs; add milk, onion, spices and salmon liquid.", "Pour over top.", "Cover and refrigerate for at least one hour.", "Bake for 1 hour at 325\u00b0.", "Sprinkle with remaining cheese and bake 5 minutes more.", "Let stand 5 to 10 minutes before serving."]
["salmon", "bread", "Cheddar cheese", "eggs", "milk", "onion", "salt", "pepper", "dry mustard"]