Set the braiser over medium heat. Add the bacon lardons and the pecans and cook 4 minutes or until bacon is crisp. Remove the bacon and pecans from the braiser.
Add the sprouts to the braiser, and season with salt and pepper.
Put the braiser in the preheated oven and roast the sprouts 20 – 30 minutes until they start to brown and become tender, but before they lose some of their bite, stirring after 10-15 minutes.
Add the bacon and pecans, and return to the oven to heat through for 2 – 3 minutes.
Drizzle with the balsamic vinegar and toss to combine.