Preheat the oven
Before you start working with the ingredients, you are required to preheat the oven to 450 degrees and adjust the oven racks to suitable positions.
Mix the ingredients
Place ¼ cup of flour in a shallow baking dish before combining buttermilk and egg in a small bowl. You can now stir in the remaining ¼ cup of flour, salt, black pepper, cayenne pepper and hot sauce.
Make a crumbly mixture
Pulse the saltine crackers and potato chips using your food processor and make sure that they are crumbly mixed. Place half of this mixture to a side and the other half in a shallow baking dish. You can add the rest of the crumbly mixture to the pan when you are halfway through coating the onion rings.
Coat the onion rings
You are now required to slice the onions in ½ inch thick rings. Having lined a plate with wax paper, you can start to coat the onion rings by dipping them one by one in flour before dipping them in the batter. Thirdly, you should coat the rings with the saltine/potato chip coating.
Coat the surface with oil
At the halfway stage of coating the rings, make two rimmed baking pans by putting three tbsp. of oil in each one of them. You may place these pans in the oven for eight minutes while you finish coating the rest of the rings. The oil will start to soak after 8 minutes. You may remove the pans from the oven and should tilt them carefully to coat the surface with oil.
Bake the onion rings
Divide the onion rings in the two pans and bake them for eight minutes before switching the pans and baking them for another eight minutes. Your onion rings should be ready to use after eight minutes.