While the Pie crust is par baking, saute the sliced mushrooms and chopped shallots in 2 teaspoons oil or butter until the mushrooms are nicely browned and the shallots are soft, about 8 minutes. Add the asparagus tips and saute another 2-3 minutes, just until the asparagus is bright green and still firm. Remove from heat and set aside.
4 ounces sliced mushrooms, 1 small shallot, ½ pound fresh asparagus
Grate Monterey jack cheese, divide into two 1-cup portions and set aside. Place softened cream cheese in the bowl of a stand mixer. Beat on medium until smooth. Add cream, egg yolks, and egg, beating between each addition. Add ½ teaspoon salt and black pepper to taste. Scrape the bowl and beat for about 30 seconds more.
2 cups Monterey Jack cheese, 8 ounces cream cheese, ½ cup heavy whipping cream, 2 egg yolks, 1 egg, ½ tsp salt, black pepper
Place the cooled pie crust on a baking sheet. Sprinkle one cup of Monterey Jack cheese over the bottom of the pie crust and add the mushrooms and asparagus over the cheese. Pour the cream cheese mixture over the vegetables. Sprinkle the remaining cup of Monterey Jack cheese over the quiche and grind extra pepper over the top of the cheese.
Place the quiche and baking sheet into the 350℉ oven and bake for 40 minutes. After about 30 minutes, start checking the quiche and if the crust or top seems to be getting browned too quickly, place some aluminum foil over to slow the browning.
After 40 minutes, insert a knife in the center. It should come out pretty clean except for the melted cheese.
Remove the quiche to the stove top and let cool until the top evens out a bit, about 5 minutes. Serve immediately, or cool to room temperature and refrigerate to serve later.