oven fried onion rings Ingredients ½ cup all-purpose flour, divided 1 large egg, at room temperature ½ cup buttermilk, at room temperature ¼ tsp. cayenne pepper ½ tsp. salt ¼ tsp. pepper 30 saltine crackers 4 cups kettle-cooked potato chips 2 large yellow onions, sliced into ½-inch thick rings 6 tbsp. vegetable oil Instructions