I've become a big fan of sesame desserts made with tahini or halvah (or both), so I included Claire Saffitz's Salted Halvah Blondies in my holiday cookie assortment. The fact that they have chunks of halvah in them was enough to convince me to try the recipe, but the batter also includes a fair amount of melted white chocolate, which seemed positively decadent. I had to make do with the halvah I could find at our neighborhood specialty grocer, and for some reason pistachio was the only flavor they had when I stopped by. But the recipe notes that you can use any flavor of halvah you like, including vanilla, marble, or pistachio.
To make the batter, you melt white chocolate (I used Callebaut Gold caramel white chocolate), butter, and tahini in a double boiler; whisk in brown sugar, followed by an egg, egg yolks, and vanilla; incorporate the dry ingredients (flour, kosher salt, and baking powder); and fold in crumbled halvah. You spread the batter into a pan (the recipe says to line it with foil but I used parchment instead), sprinkle on sesame seeds and flaky salt, and bake.
Recipe: "Salted Halvah Blondies" from Dessert Person by Claire Saffitz.