Hara Peko Seijo to Manpuku Majo no Isekai Slow Life!

Follows the constantly hungry Emilia, a prospective saint who was driven out from her convent. She is helped by a wandering witch named Abigail, who finds out that the source of Emilia's hunger is her immense magical power, which is due to her being the reincarnation of a goddess. Fed by Abigail's home-cooked meals, the power that Emilia has can even bring forth miracles. Source: ANN