Lunch Break

Jamie Oliver Turns Leftover Mashed Potatoes Into a Brilliant Cheese Pie

The savory casserole is one of 120-plus recipes in the star chef’s new cookbook that spotlights the most popular supermarket foods.

Jamie Oliver’s mashed potato pie puts the side dish front and center.

Photographer: Levon Biss

Editor’s Note: As more people are working from home, Bloomberg Pursuits is running a weekly Lunch Break column that highlights a notable recipe from a favorite cookbook and the hack that makes it genius.

This holiday season, let’s gives thanks for mashed potatoes. They are the MVPs of the industry, a mainstay of weekday dinners, and the anchor of so many festive dinners. According to Google Trends data, they have been, unsurprisingly, the most popular side dish for American Thanksgiving.