Caramelized Onion, Feta and Spinach Quiche with seasoning

1 -2 onion , peeled and sliced 1 (10 ounce) box frozen spinach , thawed 1 cup gruyere , grated 4 eggs 1 1/2 cups milk (or cream) nutmeg salt and pepper canola[...]

olive oil flavored cooking spray 1 medium onion , thinly sliced 2 garlic cloves , minced 6 ounces fresh spinach 12 ounces frozen artichoke hearts , thawed 8[...]