Chocolate Chip Buttermilk Custard Pie

This is a recipe of my mom's. it made it into the southern living cook-off cookbook for 2003. this is a rich, decadent pie.

Fit pie crust into a 9-inch deep-dish pie plate.

Fold edges under and crimp.

Bake at 400 degrees for 6 minutes.

Cool crust on a wire rack.

Reduce oven temperature to 350 degrees.

Meanwhile , beat butter , sugar , and flour and medium speed with an electric mixer until blended.

Add eggs , buttermilk , and vanilla.

Beat well.

Fold in chocolate morsels.

Pour into prepared crust.

Bake at 350 for 1 hour until just set and lightly browned.

Cool completely before serving.

refrigerated pie crusts, butter, sugar, all-purpose flour, eggs, buttermilk, vanilla extract, semisweet chocolate morsels