I got this recipe from Parents magazine, and messed with it just a little bit for dinner last night. It was pretty easy, but all together took about an hour to make.
2 small onions, diced
1 Tbsp olive oil
1 9-inch frozen pie shell
1 cup reduced fat milk
1 cup part-skim shredded mozzarella cheese
1/2 tsp garlic powder
3 large eggs
1/2 tsp parsley flakes
1/2 tsp Worcestershire sauce
1/4 tsp salt
1/8 tsp black pepper
1 10oz package frozen spinach, drained and squeezed of water
Preheat over to 350 degrees F. Heat oil in a skillet, and add onions. Cook on low to medium heat until caramelized.
Prick pie shell with a fork and bake for 10 minutes. When onions are done, take off heat and let cool a few minutes. Mix all other ingredients in a large bowl, then add the onions.
Pour into cooked pie crust and bake another 45-50 minutes or until firm. I served this up with some of my Easy Lemon Pepper Fish.