If you’ve never made a quiche before, let me just tell you, it’s very, very easy and absolutely delicious! A quiche is really just a fancy breakfast casserole. This quiche recipe is cheesy, rich and very flavorful. The combination of mushrooms, asparagus and leeks really complement each other beautifully but you could easily substitute other vegetables if you prefer. The arugula salad on top is a must because it adds freshness and brightens up all the bold flavors. This recipe takes no time at all ot whip up and it’s…