What to cook when you’ve run out of ideas? Shepherd’s pie, five ways

You can make mashed potatoes, right? And you can brown ground beef? Boom! You can make shepherd’s pie. It’s one of the easiest, coziest and most adaptable suppers around, according to 225 food writer Maggie Heyn Richardson. All the things you love about one-pot or sheet pan cooking ring true about shepherd’s pie, it’s a self-contained meal that checks the protein, veggie and carb boxes. It's also the kind of…