For the crust: Par-bake the crust according to package directions. Let cool slightly before adding the filling.
Adjust the oven temperature to 350 degrees F.
For the filling: Combine the cheese, sausage and cherry peppers in a small bowl and sprinkle it in an even layer over into the crust.
For the custard: Whisk together the heavy cream, parsley, eggs, 1/2 teaspoon salt and 1/4 teaspoon pepper in a small bowl.
Pour the custard over the filling and bake until the quiche is set, 35 to 50 minutes. Let cool at least 30 minutes before serving warm or at room temperature.
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