
Any good cook knows that food doesn’t have to be complicated to taste great. This tahini caramelized onion sauce is really simple and one of my favorite on-the-fly recipes ever. Honestly, if I could somehow always have enough onions on hand to sustain a steady supply, I would be perfectly content eating beans and rice smothered in this sauce for the next three years.
The time-consuming part of this recipe is caramelizing the onions, which you can do in advance. I usually use a 3 pound bag of onions for this sauce. You can use however many onions you happen to have on hand, but remember that the onions will reduce to about a third of their original size. Slice the onions thinly and place them in a hot pan with some peanut oil. Add a pinch of salt (to encourage the onions to sweat) and cook on medium heat for 30-45 minutes, stirring frequently. Keep a close eye on them so they don’t stick to the bottom of the pan or burn; turn down the heat if they’re getting out of hand. If they do stick, deglaze the hot pan with a tablespoon or two of water; the liquid will evaporate instantly and the onions will loosen. Continue to cook until they have reduced a good deal and are soft, dark brown in color, and sweet. Be patient; it’s well worth the wait, and the rest of the sauce comes together in less than five minutes.
- 2 tbsp tahini
- 2 tbsp lemon juice
- 1 tbsp water
- 2 tsp olive oil
- 2 cups caramelized onions, give or take
- In a small bowl, whisk together tahini, lemon juice, water and olive oil until mixture thickens.
- Whisk in additional water a tablespoon at a time until mixture reaches desired consistency.
- Stir in caramelized onions to taste.

4 comments
Vienna says:
Nov 3, 2012
Thank you for the suggestion of using this on beans or lentils and rice. I’ve used this sauce with both of these suggestions plus sauteed greens and slurped it up. DELICIOUS!
Heather says:
Jan 10, 2013
5 stars just doesn’t seem enough! My kids (5 and 10) also loved it! I made “popcorn rice” and lentils and put a blob of this yummyness on top. Big hit and both wanted seconds. I didn’t feel like making a veggie to go with this dinner so I just hid them in the lentils. I put a carrot a rib of celery a small bit of onion and a tomato in the blender. While that was getting smooth I heated the pot I was going to cook the lentils it. When that was hot I put a splash of EVOO and the veggie mix and let that cook for a few. I then added the water lentils and a bay leaf. After they were cooked I added some salt and a splash of balsamic vinegar (the vinegar is a trick I learned from the Cabbagetown Cafe cookbook). This Onion tahini sauce tied it all together. If I had to say one bad thing about this it was be that it didn’t make enough:( next time I am going to x it by 2 or 3 so I will have some for lunch the next day. Thanks for this recipe!!
claryn says:
Jan 21, 2013
Aw, thanks Heather! I love your ingenuity with hiding extra veggies in the lentils.
Stacy says:
May 4, 2013
One of my downfalls is patience when at the stove stirring for long periods or doing large batches of pancakes, etc.
Any chance of cooking the onions in the oven?
Thanks.