Why microwave the brussels sprouts first?
Microwaving softens the sprouts' interiors before roasting, reducing total cook time and ensuring they're tender inside while the oven crisps the exterior.
How do I know when the brussels sprouts are crispy enough?
They're done when the outer leaves are deep golden brown and the cut sides are caramelized, usually 20–25 minutes in a 400°F oven.
Can I make this ahead?
Trim and halve the sprouts up to 24 hours ahead. Roast just before serving for best crispness, or reheat at 350°F for 5 minutes.
What if I don't have balsamic vinegar?
Substitute with apple cider vinegar or red wine vinegar, using the same amount but reducing honey slightly since balsamic is naturally sweeter.
Can I use pancetta instead of bacon?
Yes; cook and crumble it the same way, or use pre-cooked bacon bits for convenience.