Lentil Shepherd’s Pie with Rustic Parsnip Crust

Lentil Shepherd’s Pie with Rustic Parsnip Crust

My family eats mashed potatoes at every holiday meal, and as a kid I never liked them, except as a bowl for gravy, which I adored. Imagine my surprise when I learned that you could add other things to mashed potatoes to make them good—such as roasted garlic, leeks,...