Preheat your oven to 425F. Prep your brussels sprouts by cutting off the end and chopping in half.
In a bowl mix together the harissa paste, honey and olive oil. Toss your brussels sprouts in the mixture and season with some salt and pepper to taste.
Pour on to a baking sheet and bake for about 12-15 minutes until browned and tender when pierced with a knife.
Put under the broiler for the last minute if you like to get them crispy and browned.
Serve with fresh lemon juice squeezed over top to taste.