Step 1

Pre-heat oven to 350 degrees F (175 degrees C). Grease a 2-quart casserole dish with butter or non-stick cooking spray.

Step 2

In a large skillet, melt the butter over medium heat. Add the shallots and sauté for 1 minute. Add the asparagus and mushrooms and sauté, stirring frequently, for 5-7 minutes until the asparagus is soft. Transfer to the prepared casserole dish. Sprinkle the swiss cheese evenly on top of the vegetables.

Step 3

In a medium bowl, beat the eggs. Mix in the milk, parsley, salt and black pepper. Pour the egg mixture over the cheese.

Step 4

Bake in oven for 35 to 40 minutes, until a knife inserted in the center comes out clean. Let stand for 10 minutes prior to cutting.