Like you, my Bubba always made Potatonik (we nicknamed it, Nik, as kids).
Recipes differ from region to region and I have two.
My mother's was as follows:
take lots of peeled potatoes (raw) and put them in the blender
pour into a big bowl, add eggs, matza meal, and finely grated onion
season with lots of salt to taste. Add lots of vegetable oil Mix together. (She did it all by hand)
Work quickly or else the potatoes will turn color. Oil a pan generously and pour the mixture in.
Put in the oven at 350F and bake at least an hour or more until dark brown.
The other recipe comes from a Polish lady.
2.5 LBS of raw potatoes
1.5 cups of chopped raw onion
1/2 tsp salt and pepper
1/4 tsp ground pepper
1/3 cup all purpose flour
1-2 tsp of fresh herbs (thyme, rosemary or parsley
1) Peel and dice potatoes. Keep in cold water until ready to blend.
2) Dice onion and saute until golden. Set aside. Chop herbs and set aside.
3) Preheat oven to 350F. Grease a 9X5 loaf pan.
4) Place potatoes, eggs, salt, pepper in a blender. Blend until smooth. Then place
mixture in a large mixing bowl, add herbs and flour and hand mix until combined.
Pour mixture into loaf pan. Bake about 90 min until outside is golden brown and
middle is dry and set.
Denise Lascelle (nee Cudeck) searching Gliklich/Trost/Cudeck
Ottawa, Ontario, Canada