Preheat your oven to 400°F (200°C).

Prepare the Brussels sprouts by trimming and halving them.

Cut the bacon into small pieces.

In a large mixing bowl, combine Brussels sprouts and bacon, drizzle with olive oil, and season with salt and pepper.

Spread the mixture onto a baking sheet in a single layer.

Roast in the oven for 20–25 minutes, stirring halfway through.

If using, drizzle with balsamic vinegar right before serving.