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["Combine the oil and red pepper flakes in a small bowl; set aside.", "In a large, heavy skillet, cook both sausages in batches over medium heat, stirring often, until browned--about 10-15 minutes.", "Using a slotted spoon, transfer sausage to a large bowl; stir in the pizza sauce and set aside.", "In a large bowl, whisk 4 of the eggs until frothy; stir in the ricotta and Parmesan cheeses, basil, oregano, and pepper.", "Spoon 1/2 the sausage mixture into a shallow 6-quart casserole dish; spoon small dollops of the ricotta mixture over the sauce.", "Sprinkle with 1/2 the mozzarella; arrange the pepperoni over the cheese.", "Repeat with remaining sauce, ricotta mixture, and mozzarella.", "Cover dish with foil and refrigerate for 1-2 hours (the flavors will blend well).", "Preheat oven to 375*F.", "On a lightly floured surface, roll out 3/4 of the dough about 1/4"" thick; trim to the shape of the baking dish, but leave the dough 1"" larger.", "Place dough over the filling, turn edges under, and crimp.", "Whisk the remaining egg with 1 tablespoons.", "water; brush some over the dough.", "Roll out remaining dough and cut out shapes with a small cookie cutter; arrange shapes over crust and brush with remaining egg mixture.", "Brush the entire crust with the reserved olive oil-pepper flake mixture.", "Bake the pie, uncovered, for 35-45 minutes, or until the top is golden and the filling is heated through.", "Cool on a wire rack for 20 minutes before cutting and serving."]