An engineered topsoil for use in soil reclamation and a method of producing the same are disclosed that seek to replicate undisturbed native reference topsoil from near the site in need of land reclamation. The engineered topsoil is formed from a base amount of subsoil and amendment comprised of an effective amount of surrogate humin material sufficient to replicate the estimated humin organic carbon content of the native reference topsoil, and an effective amount of plant residue material sufficient to replicate the estimated non-humin organic carbon content of the native reference topsoil.