Place the buttered bread cubes in a 9x9 inch baking dish. Sprinkle coconut and chocolate chips on top. Cream together the sugar and peanut butter with an electric mixer. Add the eggs and vanilla. Blend in the milk, pouring it over the bread. Place the baking dish in a shallow pan on an oven rack. Pour hot water in the outer pan to a depth of 1 inch.
Bake at 350 degrees for 1 hour or until a knife inserted halfway between the edge and the center of the dish comes out clean. Serve warm with whipped cream or ice cream. This dessert adds more protein to a meatless meal.
