Preheat oven to 400. Line a baking sheet with parchment paper or silpat baking sheet.
Trim brussels sprouts - cut bottom 'stem' off and cut lengthwise.
Add trimmed brussels sprouts to a bowl. Add olive oil, garlic, pepper, salt and rosemary in a bowl. Toss halved brussels sprouts until evenly coated.
Lay brussels sprouts face down on lined baking sheet
Bake at 400 for 15 minutes, flip brussels sprouts + return to oven for additional 5-10 minutes until browned.
Video
Notes
Tips for crispy brussels sprouts:
Place your brussels sprouts flat side down. This helps them to get crunchy on the outside and crisp up on the bottom too!
Make sure to evenly coat brussels sprouts in olive oil. Use your hands to really massage the olive oil into the brussels sprouts so they get evenly coated. Evenly coated = evenly crispy!