For the crust, flatten the shortening into a disk on a piece of plastic wrap; wrap and freeze. Cut the unsalted butter into small cubes; wrap and freeze for 1/2 hour.
Place the flour, cayenne, salt, and sugar in a food processor and pulse 2 times for 1 to 2 seconds each time. Scatter the frozen butter cubes over the flour and pulse about 8 times. Break up the frozen shortening over the flour mixture and pulse 6 times. Add the cheese and pulse 3 times. Pour the cold water over the pastry mixture and pulse 6 to 8 times, just until the dough comes together.
Place the pastry on a floured surface, pressing to form a ball. Divide and shape the dough into 2 disks, one slightly larger than the other. Wrap in plastic wrap and refrigerate for at least 1 hour and up to 3 days.
For the filling, bring 3 quarts of salted water to a boil. Boil the greens for 3 minutes. Drain and plunge the greens into ice water. Drain well, squeezing all of the water out of the greens.Set aside.
In a 5-quart Dutch oven, sauté the mushrooms in the olive oil over high heat until softened, 2 to 3 minutes. Remove from the pot; set aside.
Add the butter and onions to the pot. Saute 4 to 5 minutes or until the onions are translucent. Sprinkle flour over the onions. Stir and cook 2 minutes. Slowly stir in the warm milk and half-and-half. Cook until bubbly and thick, stirring constantly. Stir in the salt, pepper, cayenne, and nutmeg. Remove from the heat. Stir in the greens and mushrooms. Add the cheese and lemon juice, and stir. Cool 30 minutes.
To complete the pie, heat the oven to 350°F. On a floured surface, roll out the larger disk to an 11-inch circle. Press into a 9-inch pie plate. Roll the other disk to a 9 1/2-inch circle. Pour the filling into the prepared pie crust. Top with the smaller crust. Trim the edges and crimp.
Mix the egg yolk and cream. Brush over the top of the pie crust. Cut 5 slits in the top crust. Place the pie on a baking sheet. Bake for 30 minutes. Reduce the oven temperature to 325°F. Bake for 40 to 50 minutes longer, until the pie is golden brown. Allow the pie to rest at least 20 minutes before cutting.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	630.75 Kcal (2641 kJ)
Calories from fat	167.04 Kcal
		% Daily Value*
Total Fat	18.56g	29%
Cholesterol	66.91mg	22%
Sodium	1561.62mg	65%
Potassium	768.88mg	16%
Total Carbs	97.82g	33%
Sugars	8.17g	33%
Dietary Fiber	11.62g	46%
Protein	19.87g	40%
Vitamin C	25.3mg	42%
Vitamin A	0.1mg	4%
Iron	4.6mg	26%
Calcium	257mg	26%

Amount Per 100 g
Calories	93.69 Kcal (392 kJ)
Calories from fat	24.81 Kcal
		% Daily Value*
Total Fat	2.76g	29%
Cholesterol	9.94mg	22%
Sodium	231.96mg	65%
Potassium	114.21mg	16%
Total Carbs	14.53g	33%
Sugars	1.21g	33%
Dietary Fiber	1.73g	46%
Protein	2.95g	40%
Vitamin C	3.8mg	42%
Iron	0.7mg	26%
Calcium	38.2mg	26%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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