Grandma's "OLD SCHOOL" Scalloped Potato Casserole

INGREDIENTS

3 lb

Potatoes, About 8-10 Medium size Russet Potatoes for 8 Cups, Medium to Thick Slice

3 cloves

Garlic, Smashed and Minced

Medium large Onions, Sliced, rings separated

1 tbsp

Olive Oil

Couple of pinches of Sea Salt

Couple of pinches of Black Pepper (to Taste, I like a lot of pepper)

1 tbsp

Cajun Spice Mix

1 stick

(8 TBS, Divided) Butter

1 12 ounce can

Evaporated Milk

Sprinkle of Additional Herb spices (Herbes de Provence, Dill, Rosemary, Basil, etc) for appearance