Step 1

Press the pie crust into a 9-inch springform pan and up the sides. Place foil around the bottom of the pan and up the sides to prevent any leaks. Place the springform pan on a baking sheet and refrigerate until needed.

Step 2

Coat a large skillet with olive oil and add onions and water. Cook over medium-low heat, stirring occasionally, until onions caramelize, about 30 minutes.

Step 3

Add the ham and cook, stirring occasionally for about 5 minutes.

Step 4

Add the asparagus and cook another 5 minutes stirring occasionally. Remove from heat and set aside.

Step 5

Preheat oven to 375 degrees.

Step 6

In a large bowl combine the eggs, heavy cream, salt and pepper. Whisk to combine.

Step 7

Place about two-thirds of the ham mixture on the crust. Top with two-thirds of the cheese.

Step 8

Pour about two-thirds of the egg mixture on top.

Step 9

Repeat with the remaining ham mixture, cheese, and egg mixture. Filling should be about 1/2" from the top of the pie crust. If you have extra ingredients, save for scrambled eggs the next day.

Step 10

Cover the quiche loosely with foil and bake for about 90 minutes. Remove the foil and bake for another 20 to 30 minutes or until the quiche is set but jiggles just slightly.

Step 11

Remove from oven and let cool on a rack for about 30 to 45 minutes before serving.

Step 12

Can be served room temperature, cold, or warm.