Cut the ham into 1cm squares and the processed cheese into 5mm cubes.

Mince the onion and microwave it in a heatproof container covered with plastic wrap for 30 seconds to 1 minute at 600W. Let it cool. Peel the roasted sweet potato, cut it into manageable pieces, and mash it in a bowl with a fork.

Add milk, salt, and pepper to the mashed sweet potato and mix well. Then add the onion, ham, and processed cheese, and gently combine. Divide the mixture into 6 portions and shape each into an oval.

Coat each croquette in flour, then beaten egg, and finally breadcrumbs.