Browning - If an ingredient on top of the casserole needs to be
browned, you will have to remove the lid at the end of the cooking time.
Cooking Time - Most casseroles are cooked at 350 degrees for about 45
minutes. The ingredients need to all be warm, and if there is cheese on
the top, it needs to be bubbling.
Dishes - To keep your casseroles from drying out, cover them when
baking with a lid or aluminum foil. Adding an ingredient like cheese on
top also helps.
Dish Size - Don't try and cook a casserole in too small a dish.
You will dry out the top trying to heat the inside.
Flavor - Casserole are a great "make ahead" dish. Letting
the casserole sit after mixing the ingredients will help the flavor.
Freezing - Casserole generally freeze well, but are best when used
within 2 months.
Garnish - Casseroles will look more appetizing if they are garnished.
You can do this easily by just adding a little color with a spice like paprika,
or you can slice up vegetables like olives and green peppers and lay them on
top.
Here are some suggestions to garnish casseroles: