3 Ingredient Crispy Onion Chicken

A traditional three-stage breading station (flour, egg wash, breadcrumbs) is a standard kitchen technique, but it can be time-consuming and messy in high-volume environments or quick-turnaround service. This method from Backyard Chef simplifies the process by utilising mayonnaise as an adhesive and moisture barrier, paired with pre-prepared crispy fried onions for the outer crust. The mayonnaise replaces the flour and egg stages entirely, offering a modern, high-fat emulsion that clings tightly to the chicken breast while keeping the meat juicy during cooking.

The Mechanics of Mayonnaise as a Binder

Using mayonnaise instead of egg wash solves several common issues in the kitchen. First, mayonnaise has a higher viscosity, allowing it to hold a heavier crust without slipping off the meat during cooking. Second, the oil-and-egg emulsion acts as an insulating jacket. As the chicken roasts, the fat in the mayonnaise melts slowly, basting the meat from the outside and preventing the lean chicken breast from drying out. This technique works exceptionally well for oven-baking, where dry heat typically threatens to ruin breast meat.

Handling Pre-Cooked Coatings

Because commercial crispy onions are already fried, they are highly sensitive to direct heat. Baking at 200°C (180°C fan) for 18 to 22 minutes is the sweet spot. Any higher, and the sugar and fat in the onions will scorch before the chicken reaches its safe internal temperature. Chefs should ensure the onions are crushed to an even, medium-coarse texture; pieces that are too large will fall off, while a powder will turn pasty when combined with the mayonnaise. No extra salt is required, as both the mayonnaise and onions carry enough built-in seasoning to carry the dish.