Prepare squash by cutting off rind and seeding it. Cut into small chunks.
Cook enough cushaw to equal 2 cups. This can be done by putting a small amount of water in a pan and slowly cooking it so it won't stick. Another way is to put cushaw in a microwave safe bowl, cover and microwave until soft.
Put cooked cushaw in mixing bowl.
Add remaining ingredients and mix until blended well.
Pour into pie shell and bake at 350 degrees until done, about 45 minutes or until center doesn't jiggle.