AMYONE

Brown Butter Sourdough Chocolate Chunk Cookies with Pistachio-Tahini Pools

Brown Butter Sourdough Chocolate Chunk Cookies with Pistachio-Tahini Pools

    This small-batch recipe makes 12 thick, bakery-style cookies with crisp edges, chewy centers, and a glossy pistachio-tahini pool. It uses 100g sourdough discard, brown butter, a 12–24 hour cold ferment, and one reusable AMYONE 8×8 square silicone baking mat for both portioning and baking — no parchment, no greasing.

    Brown butter is the easiest way to make a cookie taste professionally baked: milk solids toast into nutty amber specks, water evaporates, and the flavor deepens without extra sugar. Adding sourdough discard brings lactic acid, enzymes, and a subtle tang that turns a one-note chocolate cookie into something complex — while the overnight cold ferment develops flavor and controls spreading. This brown butter sourdough chocolate chunk cookie recipe uses a two-sugar blend for chew, dark chocolate chunks for depth, and a pistachio-tahini pool inspired by 2026’s Dubai-chocolate trend. The entire portion-and-bake workflow happens on one AMYONE 8×8 inch / 20×20 cm square silicone baking mat.

Ingredients

Cookie dough

  • 170g unsalted butter, browned and cooled to 70–75°F / 21–24°C
  • 150g light brown sugar
  • 50g dark brown sugar
  • 100g granulated sugar
  • 2 large eggs, room temperature
  • 1 tsp vanilla extract
  • 100g active sourdough discard, room temperature (100% hydration)
  • 280g all-purpose flour
  • 6g baking soda
  • 5g fine sea salt
  • 180g dark chocolate (60–70%), chopped into chunks
  • 80g toasted pistachios, roughly chopped

Pistachio-tahini pool

  • 60g tahini, well stirred
  • 40g pistachio paste
  • 30g powdered sugar
  • 10g warm water, plus more to thin
  • Flaky sea salt, for finishing

Instructions

Step 1 — Brown the butter and toast the pistachios

    Melt butter over medium heat. Swirl until it foams, then turns amber with brown specks on the pan bottom and a nutty aroma. Remove from heat immediately and stir in the chopped toasted pistachios. Pour into a mixing bowl and cool to 70–75°F / 21–24°C.

Step 2 — Cream sugars and build the dough

    Whisk light brown sugar, dark brown sugar, and granulated sugar into the cooled brown butter for 1 minute. Add eggs one at a time, then vanilla and sourdough discard, mixing until smooth. In a separate bowl, whisk together flour, baking soda, and salt. Fold the dry ingredients and chocolate chunks into the wet mixture until just combined — a few streaks of flour are fine, but no dry pockets.

Step 3 — Portion on the 8×8 mat and cold ferment

    Scoop 12 balls of about 95g each onto the AMYONE 8×8 square silicone mat, arranging them in a 3×3 grid as a portioning guide. Gently press each ball into a 5cm / 2-inch disk. Cover and refrigerate for 12–24 hours. The mat is non-stick, so the chilled disks lift cleanly without parchment or greasing.

Step 4 — Bake four at a time with pistachio-tahini pool

    Preheat oven to 375°F / 190°C. Transfer 4 chilled disks to a clean 8×8 mat set on a rigid pan, spacing them evenly; keep the remaining 8 disks refrigerated. Press a shallow well into the center of each disk. Thin the pistachio-tahini mixture with warm water to a pipeable consistency, then fill each well with about 1 teaspoon. Bake 13–15 minutes until edges are deep golden and centers still look slightly underdone.

Step 5 — Rest, finish, repeat

    Let the cookies rest on the mat for 8–10 minutes so residual heat sets the centers and the chocolate re-solidifies. Transfer to a wire rack and sprinkle with flaky salt. While the first batch cools, take the next 4 chilled disks from the 8×8 mat grid and repeat the bake. Repeat once more for the final 4 cookies.

Pro Tips

  • Taste the browned butter. If it smells bitter or burnt, start over — it goes from perfect to burnt in less than a minute.
  • Weigh ingredients in grams. Cookies spread and bake consistently only when flour, sugar, and butter are precise.
  • Chill the full 12–24 hours. Two hours works, but overnight is where flavor and spread control actually happen.
  • Bake in batches of 4. Crowding traps steam and changes spread; the 8×8 mat grid keeps every ball identical.
  • Pull the cookies when centers look slightly underbaked. The 8–10 minute rest on the mat finishes them into a chewy center.
  • Press a shallow well, not a deep hole, for the tahini-pistachio pool — shallow keeps the glossy swirl visible instead of sinking.
  • Salt after baking. Flaky salt stays crisp and bright on the glossy pool.

Frequently asked questions

Can I use sourdough discard straight from the fridge?

Let it come to room temperature first. Cold discard lowers the dough temperature, slows the creaming step, and hydrates unevenly into the flour. One hour on the counter is enough.

You can bake after a 2-hour chill, but expect more spread and less flavor depth. The 12–24 hour cold ferment hydrates the flour fully and lets enzymes develop toasty-sweet notes. In a hurry, freeze the portioned disks 20 minutes as a bare minimum.

No. Brown butter cookies are easy by hand: a wooden spoon for creaming and a spatula for folding. Hand-mixing actually makes overmixing less likely, which helps keep the centers chewy.

The fat is too warm when it hits the oven. Chill the portioned disks a full 12–24 hours, bake only 4 per sheet, and make sure the browned butter was cooled to 70–75°F / 21–24°C before creaming. If your kitchen is very warm, freeze the disks 15 minutes before baking.

The 8×8 silicone mat protects the base, but if it sits on a dark sheet pan the heat can still conduct too strongly. Use a light-colored rigid pan under the mat, or lower the oven to 365°F / 185°C and check at 12 minutes.

The mixture was too thin or the cookies were overbaked. Thin the tahini-pistachio mixture only to a pipeable consistency, use a shallow well, and stick to 13–15 minutes. Chilling the filled disks 10 minutes before baking also helps.