1-Start by preheating your oven to 350°F and lining a baking sheet with parchment paper to make cleanup a breeze. This simple step sets the stage for baking cookies that come out just right. Next, brown the 1/2 cup (110g) unsalted butter over medium heat until it smells nutty and turns a golden color, then mix in the 1 1/2 tablespoons white miso paste for that deep umami flavor.

2-In a bowl, whisk the 1/2 cup (100g) granulated sugar, 1/2 cup (100g) packed dark brown sugar, 1 teaspoon vanilla extract, and 1 large egg into the butter-miso mixture until it’s pale and creamy this takes about 2 minutes of vigorous whisking for a strong structure. Gently fold in the dry ingredients: 1 1/4 cup (165g) all-purpose flour, 1/2 teaspoon baking powder, 1/4 teaspoon baking soda, and 1/4 teaspoon salt, to keep the dough tender and avoid toughness.

3-Stir in 6 ounces of chopped dark chocolate (70-80% cocoa) and 3 tablespoons of white sesame seeds for added texture and richness. Use a 2-ounce scoop or 1/4 cup measure to portion the dough, press the tops into the sesame seeds, and space them on the baking sheet. Bake for 11-13 minutes until the edges are light golden but the centers stay slightly underdone, then let them rest on the sheet for 5 minutes before moving to a cooling rack for 20-30 minutes.