Why You’ll Love This Recipe

Unlike standard chocolate chip cookies, the addition of sesame paste (tahini) adds a creamy, earthy undertone that cuts through the sweetness. Caramelizing your white chocolate—a technique often used by pastry chefs—transforms standard chips into complex, toffee-flavored “gold.” Baking it in a cast-iron skillet ensures those coveted crispy edges and a soft, melt-in-your-mouth center.

Ingredients

• For the Caramelized White Chocolate: 1 cup high-quality white chocolate chips or chopped bar (at least 30% cocoa butter).
• The Cookie Base:
  • 1/2 cup (113g) Unsalted Butter
  • 1/2 cup (120g) Smooth, runny Tahini (stir well before measuring)
  • 3/4 cup (150g) Light Brown Sugar, packed
  • 1/4 cup (50g) Granulated Sugar
  • 1 Large Egg, room temperature
  • 1 tsp Pure Vanilla Extract
  • 1 ½ cups (190g) All-Purpose Flour
  • 1/2 tsp Baking Soda
  • 1/2 tsp Fine Sea Salt
  • Topping: Flaky sea salt and 1 tsp toasted sesame seeds

Step-by-Step Instructions

1. Caramelize the White Chocolate (Optional but Recommended)

Preheat your oven to 250°F (120°C). Spread white chocolate on a parchment-lined baking sheet. Bake for 30–45 minutes, stirring every 10 minutes with a spatula. It will look lumpy at first, but keep stirring until it turns a deep golden peanut butter color. Let it cool and harden, then chop into chunks.

2. Brown the Butter

In a 10-inch cast iron skillet over medium heat, melt the butter. Continue cooking, whisking constantly, until the milk solids turn golden brown and smell nutty. Immediately remove from heat and pour into a large mixing bowl to stop the cooking.

3. Mix the Wet Ingredients

Whisk the tahini into the browned butter until smooth. Add both sugars and whisk vigorously until the mixture is glossy and emulsified. Whisk in the egg and vanilla extract until fully incorporated.

4. Fold in Dry Ingredients

Sift the flour, baking soda, and fine sea salt directly into the bowl. Use a spatula to fold the dry ingredients into the wet until just a few streaks of flour remain. Fold in your caramelized white chocolate chunks.

5. The Bake

Wipe your skillet clean (or leave the butter residue for extra flavor) and press the dough evenly into the pan. Top with a few extra chocolate chunks. Bake at 350°F (175°C) for 18–22 minutes. The edges should be set and golden, but the center should still look slightly underbaked.

6. The Finishing Touch

Remove from the oven and immediately sprinkle with flaky sea salt and toasted sesame seeds. Let it rest in the skillet for at least 15 minutes before serving to allow the center to set into a fudgy texture.

Fact-Check: Science & Flavor

• Tahini as a Fat: Tahini is roughly 50-60% fat. In this recipe, it replaces some of the traditional butter content, providing a more “tender” crumb and a unique savory profile.
• The Maillard Reaction: Caramelizing white chocolate is actually a Maillard reaction. The milk proteins and sugars in the white chocolate react under low heat to create hundreds of new flavor compounds similar to caramel and toasted nuts.
• Skillet Benefits: Cast iron has high thermal mass, meaning it retains heat better than glass or thin metal, resulting in a superior crust-to-gooey-center ratio.