In a large mixing bowl, combine the Brussels sprouts with olive oil, maple syrup, Dijon mustard, garlic powder, salt, and pepper. Toss until the Brussels sprouts are well coated.
Spread the Brussels sprouts in a single layer on a baking sheet lined with parchment paper.
Roast in the preheated oven for 20-25 minutes, or until the Brussels sprouts are tender and caramelized, tossing halfway through for even cooking.
If using, add the chopped pecans to the baking sheet during the last 5 minutes of roasting to toast them slightly.
Remove from the oven and let cool for a couple of minutes. Garnish with fresh parsley before serving.
Notes
Optional pecans add a nice crunch.
Keyword Brussels sprouts, Dijon mustard, maple syrup, vegetable side