Preheat oven to 400F
Melt butter and oil in small skillet.
Sauté onion, peppers(if using) and garlic until onion is translucent. Let cool slightly - about 10-15 minutes.
Sprinkle about ½ c of cheese over pie crust.
Spread sausage and onion mixture over cheese.
If using olives, spread over sausage/onion layer
Sprinkle remaining cheese over sausage
Beat cream, eggs, seasonings, cilantro, salt and pepper together with whisk. Pour over pie crust slowly so all liquid is absorbed.
Bake for about 35-40 minutes until quiche is puffy and golden and center does not seem liquid when moved. Allow to cool at least 10-15 minutes before cutting.
Quiche can be eaten hot, cold or at room temperature. You may enjoy serving this with sides of sour cream with chopped chives, and salsa.
T=tablespoon t=teaspoon