Cut the eggplant into half-inch slices. Bread the slices with flour, eggs, and bread crumbs, in that order. Fry the coated eggplant slices in oil on both sides until golden. (Alternatively, you can spread four tablespoons of oil on a Gefen Parchment-lined cookie sheet. Place the coated eggplant slices on the cookie sheet, and bake uncovered at 400 degrees Fahrenheit for 10 minutes on each side.)

In a food processor, blend the fried eggplant with the onions, hard-boiled eggs, walnuts, salt, and pepper. Set the mixture aside.

Preheat the oven to 425 degrees Fahrenheit.

Grate the potatoes. Add the eggs, oil, and salt. Mix well by hand.

Pour the mixture onto a well-greased parchment-lined cookie sheet. Bake for 20 minutes.

Cool for five minutes.

Gently roll up the flat potato “kugel” jelly- roll-style.

Let it sit for one hour.

Unroll, spread the eggplant mixture over it, and re-roll. Serve warm.