Preheat oven to 350°F. Roll out premade pie crust or puff pastry (a crust from scratch works as well). Press gently into tart pan and trim off excess crust. In a large bowl, lightly whisk eggs and cream. Add cheese, spinach, salt and pepper and combine thoroughly. Be sure not to over mix. Pour into tart shell and bake for 15 minutes. Take out of the oven and sprinkle top of quiche with tomatoes, feta and parsley. Return to the oven and bake until edges are set and middle slightly wobbles when shaken (about 10-20 minutes more). Allow to cool for 10 minutes before serving.