Botsuraku Reiko no Cinderella Gourmet

Reiko, the daughter of a former company president, is now poor after her family fell into ruin. Working part-time, she has one pleasure: every month on payday, she gets to enjoy one dish of "affordable luxury gourmet food" as much as she likes. This is a gourmet comedy about a woman who dreams of a moment with luxury ingredients that cost less than 5,000 yen!

https://comic-days.com/episode/2550912965708469010