Crustless Sausage Quiche - quick and easy casserole that is great for breakfast, lunch, or dinner. Quiche is one of our favorite meals, and this is one of the best quiches that I've made. It took no time to whip together and tasted great. It is so light and fluffy and super cheesy! Sausage, cheese, eggs, cottage cheese, sour cream, parmesan cheese, flour, salt, and pepper. Can make in advance & freeze for later.