I don't know about your family, but mine doesn't like the heels of bread loaves. I came up with this recipe using leftover crusts and heels of bread I had stored in the freezer. Whenever I have enough bread for a casserole, I pull it out of the freezer and uncover it so that it will dry out a bit. The following recipe can be made ahead and left uncooked or will keep in the fridge at least 3 days. This is a very loose recipe that you can easily adjust based on what ingredients you have on hand.
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Take the equivalent of about 5 pieces of bread and tear into bite sized bits. Let dry for a few hours on the counter uncovered. If you do not have time to let it dry, it is fine to go on and use it as is.
Mix 4-6 eggs with 1/4 cup-1/2 cup milk or cream. Add 1/4 teaspoon Tony's Cajun seasoning or the equivalent of salt and pepper. Pour over bread pieces. The mixture should look very wet, and if it does not, add more milk. Add leftover sausage (any type) or ham chopped into small pieces. You can keep it vegetarian, and if so desired chopped onion and spinach is a nice addition. Mix in 1 cup (or more if you like) of cheese. I use Sweetwater Valley Buttermilk cheese, but cheddar will also work. Pour into a greased casserole dish. Dot the top with slivers of butter and sprinkle with seasoning or salt and pepper. Bake on 350 degrees until the casserole is set and golden brown on top. Enjoy!