Preheat oven to 350 degrees & brush a large casserole dish with olive oil.
Melt butter over low heat in a small saucepan. Once melted, add flour and stir until combined. Stir in milk. Once thickened, add Parmesan, goat cheese, cheddar, salt, pepper, garlic and chipotle smoked pepper. Stir in half of the Cheddar Bunny crumbs.
Remove saucepan from heat and stir until all cheese is melted, then transfer to prepared casserole dish.
Slice potatoes thinly and layer alternately over cheese mixture. Top with Bunny Graham crumbs and additional Parmesan.
Bake for 70-80 minutes, or until a fork inserts easily into the potatoes.
(Tip: Increase oven temperature up to 400 degrees for expedited bake time.)