Preheat oven to 350 degrees
Peel carrots and garlic
Chop carrots into 1 inch chunks
Toss carrots and garlic with 1 T of olive oil, salt, pepper and roast for 45 minutes to 1 hour
Add carrots and garlic to food processor (or blender) along with the tahini, lemon juice and harissa (if you are using).
Blend and slowly add in olive oil until you reach hummus consistency. I used about 2 tablespoons.