Spinach Quiche

Spinach Quiche (by way of Karrie Jaster)
1/2 c. Butter
3 cloves Garlic, chopped
1 small onion, chopped
1 (10 oz.) pkg. frozen spinach, thawed and drained
3/4 c. fresh Mushrooms, sliced
1 (6 oz.) pkg. Herb and Garlic Feta, crumbled
1 (8 oz.) pkg. Cheddar Cheese, shredded
Salt to taste
Pepper to taste
1 9" unbaked deep dish Pie Crust
4 Eggs, beaten
1 c. Milk

Preheat oven to 375 degrees. In a medium skillet, melt buter over medium heat. Saute garlic and onion until lightly browned, about 7 minutes. Stir in spinach, mushrooms, feta and 1/2 cup of the chaddar. Spoon mixture into pie crust. In a medium bowl, whisk eggs and milk. Season with salt and pepper. Pour into pastry shell. Bake 15 minutes; sprinkle with remaining cheese. Bake additional 35-40 minutes, until set. Allow to stand 10 minutes before serving.