Roasted Brussels Sprouts with Bacon

Bahan-bahan (8 porsi)

• 2 pounds Brussels sprouts (908g, fresh, cut in half lengthwise top to bottom)
• 1 medium red onion (roughly chopped)
• 6 cloves garlic (roughly chopped)
• 1 teaspoon kosher salt
• 1 teaspoon black pepper
• Pinch red pepper flakes
• 2 tablespoons extra virgin oil
• 8 slices thick cut bacon (cut into ½ inch strips)