Preheat oven to 375 degrees F (190 degrees C). Lightly grease a 9x13 inch square baking dish.
Place sausage in a large, deep skillet. Cook over medium-high heat until evenly brown. Drain, crumble, and set aside.
In the prepared baking dish, put butter, then layer the bread,mushroom and tomato
In a bowl, mix the sausage, Cheddar cheese, onion, cottage cheese, and eggs. Pour over bread / mushroom /tomato (Substitute any veg/meat)
Bake 45 mins in the preheated oven, or until a toothpick inserted into center of the casserole comes out clean. Let cool for 5 minutes before serving.
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