Chop the onion, carrot, mushroom, and zucchini into bite-sized pieces.

Heat a pan over medium heat and sauté the vegetables with a pinch of salt until softened.

Mix the sautéed vegetables with cooked rice and season with salt. Let the mixture cool slightly.

Cut the cheese slices into smaller pieces, slightly smaller than the bacon slices.

Shape the rice mixture into thumb-sized balls.

Place a piece of cheese and a rice ball on a slice of bacon, then roll tightly.

Place the rolled bacon seam-side down in a preheated frying pan.