Try this skillet brownie carmelita's recipe, or contribute your own.
A crisp, buttery oat crust yields beneath a layer of molten caramel and dark chocolate, encased within the retained heat of heavy cast iron. Baking in a 12-inch skillet requires respecting how metal conducts thermal energy faster than glass or ceramic, meaning the bottom base cooks quickly during the initial ten-minute bake at 375 degrees Fahrenheit. Because melted butter and brown sugar drive the spread and chewiness of the dough, dividing these fats precisely between the bottom layer and the crumb topping dictates the structural integrity of the final dessert.
Exposed caramel touching hot cast iron will quickly scorch and turn acrid due to the high sugar content burning at elevated oven temperatures. Covering the caramel layer entirely with small handfuls of the remaining oat mixture prevents this burning while creating a crumbly top crust. When scattering chocolate chips over the hot base, residual heat initiates immediate melting, which helps anchor the caramel layer firmly in place before the second bake.
Allowing the skillet to rest for at least fifteen minutes permits the starches and sugars to set structurally as the internal temperature drops, yielding clean slices instead of a structural collapse. Storing leftovers in an airtight container at room temperature maintains texture, and individual portions freeze reliably for up to two months when properly wrapped.