To prepare a vegetable samosa pie recipe, first you need to prepare the filling for the pie. You can use any vegetable you like, as long as it hasn't been peeled or wilted. First, you'll need the following ingredients: 1 tbsp of vegetable oil 2 tablespoons of ghee or margarine 1 teaspoon of salt 1 tablespoon of ground cumin (optional) 12 cup of chopped coriander Leaves in an airtight container. Heat the oil over medium-high heat. Add the onion and cook until softened, about 5 minutes. Then add the garlic and saute until the onions are translucent. Stir in the tomato paste. Cook the mixture for 2 minutes, stirring constantly. Remove the pan from the heat and stir in 2 cups of water. Bring to boil, then simmer for 1 minute. Pour the vegetable mixture into the cooled pie shell. Cover with cling wrap and refrigerate for at least 1 hour. Serve warm or at room temperature.