Cut the onion into bite-sized pieces, remove the core. Chop the carrot and potato into bite-sized pieces. Soak the potato in water and drain.

Season the beef with salt and pepper, then coat with all-purpose flour.

Heat butter in a pan over medium heat, add the beef, and cook until browned. Remove from the pan.

Using the same pan, sauté the onion, carrot, and potato briefly.

Place the beef, vegetables, and sauce ingredients into the rice cooker and mix well.