Preheat oven to 425 degrees. Place chicken breasts (bone down) on greased rack
of a shallow roasting pan. Rub butter underneath chicken skin and roast until
chicken is done. Allow to cool slightly and remove meat from bone, chopping
into bite-sized pieces. Reduce oven temperature to 375 degrees.
Meanwhile, melt butter in
a medium skillet. Add onion and sauté for 5 minutes over medium heat.
Add parsley, salt, pepper and basil and cook, stirring often, for 1 minute more.
Remove from heat.
Combine ricotta, eggs, flour
and sharp cheese in a large bowl. Add onion mixture and chopped chicken, mixing
well. Spread into unbaked pie shell. Top with sour cream, spread to the edges
of the crust. Dust generously with paprika.
Bake for 45 minutes or until
firm to the touch at the center. Serve hot, warm or at room temperature.