Source: https://www.forksoverknives.com/recipes/vegan-pasta-noodles/penne-artichokes-leeks-lentils/
(modified by Aimee)
1. Cook pasta according to package directions.
2. In large pan, heat a little oil. Saute leeks 2-3 minutes. Stir in artichokes & lentils and heat through.
3. Place tahini in small saucepan and stir until smooth. Whisk in 1 cup water (or more for desired consistency). Stir in garlic, the juice of 2 lemons, and salt/pepper. Heat through.
4. Return pasta to the pot and stir in sauce, leek mixture, and parsley. Reheat gently if necessary. Season with salt and ground pepper.