Tensei Shitara Slime Datta Ken Bishokuden: Peko to Rimuru no Ryouri Techou

A wounded goblin warrior is given a new name and a new mission by Rimuru: "to fill everyone's stomach"! The stage is moved from the battlefield to the kitchen, as the new cook, Peco, begins his new challenge...!

(Source: Weekly Shonen Sirius, translated)