Easy weeknight meals: Brown Butter Potatoes with Lime Tartare Sauce

Anna Jones, the best-selling London cookbook author behind “One: Pot, Pan, Planet, A Modern Way to Eat,” has a new cookbook coming out in mid-September — “Easy Wins” (Fourth Estate, $35).

Among the temptations in its pages are foccacia sandwiches filled with tomatoes, peaches and tahini and this simple recipe for roasted potatoes with brown butter, topped with a tangy, bright lime tartare sauce. It’s straightforward but elegant, especially when topped with fennel or dill fronds.

Brown...