Cut spinach into 1cm pieces.

Peel and cut potatoes into bite-sized pieces, soak in water, then drain. Cut bacon into 5mm strips.

Mix egg, flour, and water in a bowl to make the batter.

Place spinach, bacon, and butter in a microwave-safe container, cover loosely with plastic wrap, and microwave at 600W for 2 minutes.

Place potatoes in a microwave-safe container, cover loosely with plastic wrap, and microwave at 600W for 7 minutes until soft. Let cool slightly.

Mash potatoes, mix with spinach mixture and salt and pepper, divide into 6 portions, and shape into balls.

Dip each ball into the batter, then coat with breadcrumbs.