Chewy Chocolate Chunk Tahini Cookies (with Flaky Salt)

Have you ever had a cookie that made you go a little cross-eyed at first bite? That’s what these chocolate chunk tahini cookies do to me, every single time. They’re chewy in the middle, just barely crisp at the edges, and the tahini gives them this savory, almost-butterscotchy depth that makes the chocolate taste even more chocolatey. If you’ve got a jar of tahini sitting in the back of your fridge wondering what its purpose in life is — this is it.

I first made these on a Tuesday night when I was out of peanut butter and feeling stubborn about going to the store. The tahini was a happy accident, and now I genuinely prefer them this way — the nuttiness from the tahini is more grown-up and a little more interesting than the usual PB flavor. The dough needs to rest overnight in the fridge, which is also a small miracle: it means you can mix these after dinner tonight and bake them tomorrow afternoon, no last-minute stress.

Why Tahini Works So Well Here

Tahini is just ground sesame seeds, but when you cream it with butter and brown sugar, it turns into this almost caramelized, deeply nutty base that plays so well with dark chocolate. It’s the same reason sesame works in halva or in Asian sweets — there’s a roasted, toasty quality that gives the cookie more dimension than butter alone can deliver. And because tahini already has a little natural bitterness, it balances the sweetness of the cookie beautifully without you having to chase the flavor with more sugar.

The other thing tahini does: it keeps the cookies unbelievably soft. Even on day three, these stay chewy instead of going cakey or dry. That’s the oil content in the tahini doing its quiet work. So if you like a cookie that you can sink your teeth into — soft center, slight crackle on the outside — tahini is your new best friend.

Ingredients

From Mixing Bowl to Oven (in Two Days)

Step 1 — Cream the butter, tahini, and sugars. In a stand mixer, beat 8 tablespoons softened butter with 1/2 cup tahini, 1/2 cup granulated sugar, and 1/2 cup packed light brown sugar on medium speed for 2 to 3 minutes, until fluffy. Don’t rush this step — the more air you whip in now, the better the texture later. (If you don’t have a stand mixer, a sturdy wooden spoon and a little patience will get you there too.)

Step 2 — Add the eggs and vanilla. Scrape down the sides, then beat in 1 large egg, 1 extra egg yolk, and 1 teaspoon vanilla for another minute. The extra yolk is the move here — it gives the cookies that rich, almost custardy chew. Make sure you scrape the bowl a few times so the tahini and butter don’t hide at the bottom.

Step 3 — Fold in the dry ingredients and chocolate. In a small bowl, whisk 1 cup plus 2 tablespoons flour with 3/4 teaspoon baking soda and 1 teaspoon kosher salt. With the mixer on low, add the dry mixture until just combined — you’ll see the last streak of flour disappear, then stop. Fold in 2 cups of bittersweet or semisweet chocolate chunks by hand. Cover the dough and refrigerate overnight (or up to 2 days).

Step 4 — Bake. Preheat the oven to 325°F (160°C). Line two baking sheets with parchment. Scoop the dough into rounds — 1 1/2-inch balls for smaller cookies, 2-inch for larger — and place them 3 inches apart on the sheet. Bake one sheet at a time, turning the pan halfway through, until the edges are golden brown but the centers still look a little pale. Small cookies take about 12 minutes; larger ones need 14 to 15. Pull them out, sprinkle with flaky sea salt, and let them cool right on the pan.

Fun Twists on the Classic

• Swap the bittersweet chocolate for milk chocolate chunks if you prefer a sweeter cookie (kids especially love this version).
• Add 1/2 cup toasted sesame seeds to the dough for an extra layer of nutty flavor and a gorgeous speckled look.
• Sprinkle a tiny pinch of flaky Maldon on top of each cookie right when they come out of the oven — non-negotiable in my house.
• Swap 1/4 cup of the flour for finely ground toasted pecans for a brown-butter-meets-tahini situation.
• Add 1 teaspoon espresso powder to the dry ingredients to deepen the chocolate flavor without making it taste like coffee.
• For a grown-up version, swap the chocolate for chopped dark chocolate with orange zest folded in at the end.

How I Love to Serve These

These are best slightly warm, when the chocolate is just barely melty and the tahini flavor is at its most fragrant. A glass of cold milk is the classic pairing, but I’ll often serve them with a small cup of strong coffee or espresso — the bitterness of the coffee plays so well with the toasty tahini. For a dinner party, I’ll crumble one over a scoop of vanilla ice cream with a drizzle of honey. It’s the most decadent 30-second dessert and people always ask for the recipe.

Storage and Make-Ahead

The dough keeps in the fridge for up to a week, so you can absolutely mix a batch on Sunday and bake cookies throughout the week whenever the craving hits. The unbaked dough also freezes beautifully for up to 2 months — scoop the dough into balls, freeze on a sheet pan, then transfer to a freezer bag. Bake straight from frozen; just add 2 to 3 minutes to the bake time. Baked cookies keep in an airtight container at room temperature for 2 to 3 days, but they lose that just-baked chew — pop one in the microwave for 5 seconds to bring it back.

Common Mistakes and Easy Fixes

• Skipping the overnight chill. The dough needs time to hydrate and the flavors need time to meld. If you bake right away, the cookies will spread too much and taste flat.
• Using stale tahini. If your tahini has been open for more than a few months, give it a taste — it can go bitter. Fresh tahini is nutty and almost sweet.
• Not weighing your flour. A cup of flour can vary by 20+ grams depending on how you measure. If you have a scale, use 150 g for the perfect texture.
• Overbaking. The cookies should look slightly underdone when you pull them out. They’ll continue to bake on the hot pan.
• Forgetting the flaky salt on top. It really does make a difference — the salt pops the chocolate flavor and balances the sweetness of the dough.

Your Questions, Answered

Can I use natural peanut butter instead of tahini? Yes! The cookies will taste more like classic chocolate chip cookies with a peanut-buttery undertone. The texture will be slightly different (peanut butter has more sugar), but still delicious.

Do I really need to chill the dough overnight? Yes, this is the step that makes the cookies. If you’re in a rush, chill for at least 4 hours — the flavor won’t be quite as developed, but the cookies will still be good.

Can I make these with chocolate chips instead of chunks? Absolutely. Chunks give you those gorgeous melty pools of chocolate, but chips will distribute more evenly throughout the dough. Both are lovely.

How do I know when they’re done? The edges will look golden brown and just set, but the centers will still look slightly soft and a little underdone. They’ll firm up perfectly on the baking sheet as they cool.

Can I make them gluten-free? Yes — swap the all-purpose flour for a 1-to-1 gluten-free baking flour (Bob’s Red Mill works well). The cookies will be slightly more delicate but equally delicious.

Why does the dough look kind of soft and oily? That’s the tahini! It has a high oil content, so the dough will look looser than a classic chocolate chip cookie dough. That’s totally normal — chilling firms it right up.

A Little Goodbye from My Kitchen

If you’ve never baked with tahini before, these cookies are the gentlest possible introduction. They feel familiar — chocolate chunk cookies are the ultimate comfort food — but with that subtle sesame depth that makes people pause, take another bite, and ask, “Wait, what’s in these?” Every time I bring them to a gathering, the recipe gets requested. I’d love to hear how yours turn out — drop me a comment and tell me whether you went classic with bittersweet or got creative with the milk chocolate. Until next time, happy baking.

—Marina Caldwell