In a medium saucepan, combine raspberries, sugar, cornstarch, and salt. Cook over medium heat, stirring constantly, until mixture thickens and boils. Reduce heat and simmer for 1 minute.
Remove from heat and stir in lemon juice and butter. Pour into the prepared pie crust.
Bake in preheated oven for 35 minutes, or until crust is golden and filling is bubbly.
Let cool before serving.
Interesting Facts
Raspberries are a type of berry that is native to Eurasia and North America.
Raspberries are high in fiber, vitamin C, and antioxidants.
Raspberries are low in calories, but high in flavor.