In a bowl mix together the olive oil, balsamic, maple syrup, lemon juice, dijon, garlic and red pepper flakes.
Add in the Brussels sprouts and a good pinch of salt and pepper and toss until all the sprouts are coated.
Cover the bowl with plastic or a lid and refrigerate for at least 2 hours and up to overnight.
Remove the sprouts from the marinade, letting the excess remain in the bowl. Place the sprouts on a baking sheet, cut side down and sprinkle the bacon evenly over them.
Bake at 425 on the bottom rack of the oven for 20-25 minutes until browned and crisp.
Keyword marinated brussels sprouts with maple balsamic and bacon