Step 1: Preheat your oven to 350°F (175°C) for even baking.
Step 2: In a mixing bowl, combine the melted butter, granulated sugar, flour, baking soda, baking powder, and salt. Mix until well combined.
Step 3: Press this mixture into the bottom and up the sides of your pie dish. Bake for about 10 minutes or until lightly golden, then let cool slightly.
Step 4: In another bowl, whisk together sour cream, shredded coconut, flour, beaten egg, vanilla extract, and raspberry jam until smooth.
Step 5: Spread the filling evenly over the pre-baked crust.
Step 6: Combine the remaining crumb mixture with additional sugar and crumble it over the filling.
Step 7: Bake the pie for an additional 25-30 minutes until the topping is golden brown and the filling is set.
Step 8: Allow the pie to cool completely before slicing. Serve chilled or at room temperature.