Mix together all ingredients (except the pie shell) and pour the mix into the pie shell.
Put the pie into the center of the oven and bake at 425 for 15 minutes. Turn the oven down to 350 and bake another 40 minutes. Then turn the oven off, cool in oven for 15 minutes, and then crack the oven door and allow the pie to cool for another 15 minutes. This can help prevent the top of any custard pie from cracking.