Sausage Breakfast Casserole

sausage fried, drained and cooled (this can be ground sausage or chopped up links)

eggs

pieces bread cubed, without crust

milk

salt

dry mustard

grated cheddar cheese

optional add ons:

You can add one or all of these ingredients or be creative and add what you like. However, the casserole is delicious as is!

sliced mushrooms

sliced black olives

sliced roasted red peppers