Mix flour & salt together. Cut Crisco into the flour mixture until thoroughly mixed, then add milk a little at a time. Kneed into a ball & roll between wax paper. (makes up to 3 single crusts) Roll out 1 crust & place into a pie pan. Bake for about 10 minutes & then remove.
In a pot, mix whipping cream, sugar & corn starch. Mix together & cook until thick & glossy. Add vanilla & butter & mix well. Pour into the partially baked pie crust & bake at 325 for 20-22 minutes.