Preheat oven to 415 degrees F and line a baking sheet with non-stick parchment paper. Prepare brussels sprouts by trimming off the base, slicing in half vertically (or in quarters, if larger) and removing any brown or funky looking leaves.
Add brussels sprouts to a large mixing bowl, along with remaining ingredients. Toss to coat. Spread brussels sprouts onto baking sheet in an even layer. Make sure they're not overlapping.
Roast for 20 minutes, or until edges are golden brown and they can be pierced with a knife but aren't mushy. Enjoy immediately, or allow to cool completely before storing in an airtight container. Will keep for up to 4 days in the fridge. *PRO TIP: I love dipping my brussels into a little bit of dijon mustard!