Cobbled Deepslate Slab is a cobbled deepslate variant of a slab. It generates naturally in ancient cities and can be crafted or obtained through stonecutting. Cobbled deepslate slabs can be mined with any pickaxe. If mined without a pickaxe, they drop nothing.

They can be crafted using cobbled deepslate or obtained through stonecutting. Cobbled deepslate slabs function like other slabs in terms of placement and collision. They can also be placed under note blocks to produce a bass drum sound.