Lentil Shepherd's Pie With a Golden Mashed Potato Lid

It is 5:45 on a gray Sunday, the oven is at 400°F, and the potatoes are rolling in the pot like they know something. This lentil pie is 58 minutes of honest comfort, and it lets you feel virtuous while the potatoes do the flirting.

Savory lentils underneath, a blanket of mashed potato on top, and a golden lid you earn in the oven.

What you get at the table is a crackle when the spoon breaks the crust, steam curling up from the middle, and lentils that stay distinct instead of collapsing into paste. Nobody has to know how little of it took real skill. Dinner is a spoon and a quiet room.

How to make it

1. Peel and chop 2 pounds potatoes into chunks, about 8 minutes.
2. Dice 1 medium onion and 2 medium carrots, about 5 minutes.
3. Boil 1 cup green lentils in 2 cups vegetable broth until tender, about 20 minutes.
4. Boil the potatoes in salted water until soft, then mash with a splash of broth until smooth.
5. Saute the diced onion and carrots, then combine with the cooked lentils.
6. Spread the lentil mixture in a baking dish and top evenly with the mashed potatoes.
7. Bake at 400°F for 25 minutes until the top is golden.

Notes

Cooked leftovers keep three to four days in the fridge, per USDA FSIS. Cover the dish tightly, and reheat single portions in the oven or a toaster oven so the top crisps again rather than going gummy in the microwave.

Lentil pie can taste better on day two, since the lentils have had longer to soak up the flavor of the vegetables, like a date who gets more interesting once the small talk is over. Whenever you reheat it, bring it until hot all the way through.

Stop mashing as soon as the potatoes are smooth, and spread them over the filling in a thick, even layer. Peaks and ridges from a fork brown best, so rough up the surface before it goes in.

Boil the lentils in the broth, and keep an eye on them: the broth is also what flavors them, so you do not want them to boil dry. They are done when they are tender but still hold their shape, since they will keep softening under the potato.

The filling carries its whole seasoning on the broth and the salted potato water, so taste the lentil mixture before the mash goes on. If it tastes a little shy, now is the moment to add salt and pepper; a shy filling just needs some encouragement before the big reveal under the lid.

A lentil pie is an easy dish to make ahead. Assemble the filling and the topping a day early, keep them in the fridge, and bake the next evening, adding a few minutes if the dish goes in cold. It is a solid choice for a night when company is coming and you would like to be seen sitting down.

Swaps that actually work

Leave the lentils and the potato lid alone, with one exception covered below. Green or brown lentils hold their shape under the mash, and the mash is the whole lid.

Frozen peas stirred into the filling add sweetness and color, and a diced stalk of celery softens in with the onion and carrots. Tomato paste, a little thyme and a splash of Worcestershire sauce (check the label if you need it vegetarian) can make the filling taste deeper. Butter or olive oil in the mash helps it brown and taste richer, and a handful of grated cheese on top adds a crust.

The one exception is sweet potatoes, which can replace some or all of the potatoes, though the topping will be softer and a little sweeter. A mix of root vegetables works in the filling, as long as it is cut small enough to soften.

The swap that costs you the dish: red lentils. They dissolve and leave you with a mush underneath, rather than distinct, hearty lentils.

If your baking dish is shallow, set a sheet pan underneath it. Filling and mash can bubble at the edges, and a pan beneath keeps the oven clean. A deeper dish gives you more filling under the mash, which means more filling per forkful.

If it goes wrong

The filling is runny. A runny filling is the date who overshares, and it needs boundaries. There was too much liquid left after boiling. Spoon off any excess broth before you combine, or simmer the filling for a few minutes uncovered until it thickens, before the mash goes on top. Swipe it onto next week's plan anyway; the agent will shop the same lentils and never mention the puddle.

The topping sinks. The filling was too hot and loose, or the mash was too wet. Let the filling cool for a few minutes, spread the mash from the edges inward, and keep it thick.

The top will not brown. The oven ran cool or the surface was too smooth. Rough it up with a fork, and if it is still pale after 25 minutes, move the dish under the broiler for a minute or two while you watch.

It tastes flat. Usually salt. Season the lentil layer before assembling, since the mash cannot do the seasoning for the whole dish.

The mash is lumpy. The potatoes were not boiled until soft, or you did not mash them hard enough. Boil them until a knife slides through with no resistance, drain well, and mash with a splash of broth until smooth.

What to serve with it

The default is a bowl of the pie with nothing in the way, maybe a little extra black pepper on top.

The better version of the default is a simple green salad with a sharp vinaigrette, or steamed green beans, to cut the richness. A spoonful of mustard or a dash of hot sauce on the side wakes the filling up.

It makes a good lunch the next day, microwaved or reheated in the oven, with a handful of greens on the side.

A lentil pie makes a gentle dish for a friend who does not eat meat, and no one at the table has to notice. It looks traditional, and the lentils carry the savory weight.

Why this one earns its place

If comfort food is a person you call after a bad day, this is the one who answers on the first ring and brings soup, even though it is not soup. It is the dish for a gray evening, a quiet house, or choosing the warm thing over the clever thing. Swipe it into your week and the agent can shop the lentils, potatoes and broth while you pick the bowl.

If you want more of the same, chicken pot pie and beef stew are warm cousins, and the swipe meal planner is how you keep a comfort dinner on the list.

More like this: all British recipes in Crave Corner.