Quiche, Florentine Swiss Cheese, Spinach Delicately Baked in a Rich Buttery Pastry

filling (milk [milk, vitamin d3, swiss cheese [part-skim milk, salt, cornstarch, spinach, whey protein concentrate, salt, spices, pastry (enriched flour (wheat flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid, butter [cream, salt, canola oil, water, salt