Tuna Broccoli Casserole Cuisine: American Author: Jane Kaylie Prep time: 15 mins Cook time: 28 mins Total time: 43 mins Serves: 4 Ingredients 1/2 cup divided margarine 1 medium chopped onion 1/4 cup cornstarch 3 cups milk 1/4 hot pepper sauce 2 chicken flavor bouillon cubes 2 cane tuna drained, flaked 1 packet 10 oz