Preheat oven to 375 degrees F.

Spray a 9-inch square pan with cooking spray.

Chop broccoli, mushrooms, and onions.

Combine the chopped vegetables in the prepared pan.

In a medium bowl, combine cream cheese spread and eggs.

Whisk until well blended.

Gradually stir in milk until smooth.

Pour the egg mixture over the vegetables in the pan.

Bake for 45 minutes, or until the center is set and the top is lightly browned.

Let cool slightly before serving.