Vegan Shepherd's Pie

Why This Vegan Shepherd's Pie Works

During cooking, the potatoes soak up the salted water, so they mash up fluffy instead of gluey. Almond milk and vegan butter slide between the potato bits and keep them soft, so the top can brown in the oven without drying out or turning tough.

As the onions and garlic sit in the hot oil, they soften and lose their sharp bite. After a few minutes, the carrots and mushrooms start to give off some of their moisture, so they shrink a bit and turn tender. Lentils go in already cooked, so they just warm through and mix with the tomato paste and broth. While that simmers, the starch from the lentils and the tomato paste thickens the broth into more of a hearty filling instead of a thin soup.

In the oven, the mashed potatoes form a lid over the lentil mixture. That potato layer keeps the filling from drying out while it bubbles underneath. By the time the top is golden, the inside has settled into a thick, cozy stew that holds together when scooped.

Mistakes To Avoid

Boiling the potatoes too long or in unsalted water makes them waterlogged and bland, so the mash turns gluey and loose instead of fluffy. In the oven, this soft topping can sink into the lentil layer instead of sitting on top in a smooth, firm blanket.

Adding the almond milk all at once, especially if it is cold, often leaves the potatoes too runny. The mash then spreads like soup over the lentils and never really forms those light ridges that brown nicely in the oven.

Letting the lentil mixture stay too wet in the pan causes trouble later. When the filling is still very soupy going into the baking dish, it bubbles up around the edges and through the potatoes, so the top doesn’t brown well and the slices don’t hold together.

Crowding the vegetables in a small skillet keeps them from softening and lightly browning. Instead, they steam and release water, so the filling tastes flat and the texture turns mushy rather than hearty.