Keto sandwiches and canapes in an air fryer are prepared with the needs of a low-carb base in mind. An air fryer circulates hot air around the food and quickly creates browning with little added fat. Arrange food in one layer, avoid overcrowding the basket, and check doneness earlier than in a regular oven.

Small portions need to warm quickly, become firmer or more browned, and still keep their shape without drying out.