Step 1

Add lemon juice, blueberries and condensed milk to a blender. Blend until the mixture is purple and the blueberries are just small flecks in the batter.

Step 2

Pour the filling into the graham cracker crust. Use a spatula to smooth and even out the surface. Place pie into freezer until the filling is solid. This can take about an hour. Keep pie in freezer until ready to serve. If you want to decorate the pie, wait for the filling to set and then decorate. Then place pie back into the freezer until it is ready to serve.