In a medium bowl, beat cream cheese with electric mixer until creamy. Beat in eggs, evaporated milk and red pepper.
Squeeze spinach between paper towels until almost dry. Stir spinach and ham or onion into egg mixture.
Pour into frozen pie crust. Sprinkle with salt and pepper to taste.
Bake in a preheated 350 degree F. oven on a preheated baking sheet for 55 to 65 minutes, or until a knife inserted in center comes out clean.
Makes 6 servings.
Variation: Top quiche with tomatoes for added color.