I found the first version of the recipe by googling "pawpaw recipes" with a kitchen full of rapidly-ripening pawpaws. Kentucky State University's excellent pawpaw site includes a many recipes, including pies. The first recipe, by Nancy Edwards, looked nice and simple:
Pawpaw Pie a
Place all ingredients into stew pan and stir together. Cook over medium heat until thickened. Pour into unbaked pie shell and bake until the crust is done.
a. Nancy Edwards, County Extension Agent for Home Economics, Univ. of Kentucky Cooperative Extension Service
I had skim milk, a container with 2 cups pawpaw pulp, and no clue how hot to make the oven since the recipe doesn't specify a temperature. To make up for the extra pulp I added an extra egg and a bit of cornstarch to be sure it thickened. The result was this:
Findings: The most important goal was that the pie taste distinctively of pawpaws, and it did, with the strong caramel flavor of very ripe pawpaws. The texture was custardy, similar to a pumpkin pie. Ok, it was tasty and the texture was good, but I'll do it differently next time. Omit the cornstarch since thickening isn't a problem. Halve the sugar—it's way too sweet; in fact, consider honey, molasses or maple syrup instead. Add some spices like nutmeg, clove, cinnamon, ginger. Try a graham-cracker crust. The new recipe, not yet tried, is this: