Spare Spoons Kitchen
Butter and sugar simmered together on the stove, chocolate chips melted in while it's hot, then whisked with eggs until the mixture shines. Dense, fudgy, slightly crackly on top. Err on the side of underbaking — they firm up as they cool.
The stovetop method. Melting butter and sugar together (instead of creaming) gives these a slightly crackly top and a denser, fudgier crumb. It's worth the extra pan.
The whisk does real work. Whisking the eggs in vigorously — not just stirring — creates the emulsification that gives you the characteristic shiny top.
Underbake if in doubt. Toothpick with moist crumbs = perfect. Toothpick clean = overdone and dry. These firms up significantly as they cool.
Picnic transport. Cut into bars, wrap individually in parchment or wax paper. They hold their shape well and don't need refrigeration for a day at room temperature.
Gluten-free: Swap the all-purpose flour 1:1 with Bob's Red Mill 1-to-1 Gluten Free Baking Flour. No other changes needed.
Dairy-free: Use Miyoko's Creamery European Style Cultured Vegan Butter (block form, not spread) in place of the butter, and Enjoy Life Semi-Sweet Chocolate Mini Chips in place of the regular chocolate chips. Both are widely available at Whole Foods and many grocery stores.