Preheat the oven to 350. Butter a 9x13 pan, preferably metal, and line with parchment paper so it overhangs on the long sides of the pan.

In a food processor, pulse the potato chips with the flour until they resemble coarse bread crumbs. Pour in the butter and pulse until the chips are evenly moist and finely chopped. Press mixture into the prepared pan. Bake for 15 minutes or until the crust is lightly browned.

Pour the sweetened condensed milk over the crust and tip the pan so it forms an even layer. Scatter the chips, coconut and nuts on top and use a fork to press ingredients into the condensed milk.

Bake for about 30 minutes, then top with the candy corn, pressing it in, if using. Bake another 5 minutes or so until the coconut is toasted and the condensed milk is lightly browned at the edges. (If you are using candy corn and overbake it the candy corn will spread into a molten mess!) Let cool on a rack.

When pan is cool, lift out the parchment paper by the sides and cut into bars. Enjoy!