Vegetable and Egg Casserole: In a greased baking dish, layer sautéed vegetables such as bell peppers, onions, spinach, and mushrooms. Whisk together eggs, milk (or a milk substitute), and seasonings.
Turkey Sausage and Spinach Casserole: Brown lean turkey sausage in a skillet, then spread it evenly in the bottom of the baking dish.
Mushroom and Swiss Cheese Casserole: Sauté sliced mushrooms in olive oil until tender, then spread them in the bottom of the baking dish. Sprinkle shredded Swiss cheese over the mushrooms.
Broccoli and Cheddar Casserole: Steam broccoli florets until tender-crisp, then spread them in the bottom of the baking dish. Sprinkle shredded cheddar cheese over the broccoli, then pour beaten eggs mixed with milk and seasonings over the top.
Spinach and Feta Casserole: Layer fresh spinach leaves in the bottom of the baking dish, then crumble feta cheese over the top. Pour beaten eggs mixed with milk, garlic powder, and black pepper over the spinach and feta.
Southwestern Black Bean and Corn Casserole: Mix together cooked black beans, corn kernels, diced bell peppers, and chopped green chilies in the baking dish.
Ham and Asparagus Casserole: Layer sliced cooked ham and blanched asparagus spears in the baking dish. Pour beaten eggs mixed with milk, Dijon mustard, and chopped fresh herbs over the ham and asparagus.