Vegetarian Shepherds Pie Lentils (Printable)

A hearty blend of lentils, mushrooms, vegetables, and creamy mashed potatoes cooked to golden perfection.

# What You Need:

→ Potato Topping

01 - 3.3 lbs Yukon Gold or Russet potatoes, peeled and quartered
02 - 1/4 cup milk or plant-based milk
03 - 1/4 cup unsalted butter or vegan butter
04 - Salt and freshly ground black pepper to taste

→ Lentil and Mushroom Filling

05 - 2 tablespoons olive oil
06 - 1 large onion, finely chopped
07 - 3 garlic cloves, minced
08 - 2 medium carrots, diced
09 - 2 celery stalks, diced
10 - 10 oz cremini or button mushrooms, chopped
11 - 2 tablespoons tomato paste
12 - 1 teaspoon dried thyme
13 - 1 teaspoon dried rosemary
14 - 1/2 teaspoon smoked paprika
15 - 2 cups cooked brown or green lentils, drained if canned
16 - 1 cup vegetable broth
17 - 1 cup frozen peas
18 - 2 tablespoons soy sauce or tamari
19 - Salt and pepper to taste

→ Garnish

20 - Chopped fresh parsley, optional

# How-To Steps:

01 - Preheat oven to 400°F. Place potatoes in a large pot of salted water, bring to a boil, and simmer for 15 to 20 minutes until fork-tender. Drain thoroughly.
02 - Mash drained potatoes with milk and butter until smooth and creamy. Season generously with salt and pepper. Set aside.
03 - Heat olive oil in a large skillet over medium heat. Add chopped onion and minced garlic, sautéing for 2 to 3 minutes until softened and fragrant.
04 - Add diced carrots and celery to the skillet. Cook for 5 minutes, stirring occasionally, until vegetables begin to soften.
05 - Stir in chopped mushrooms and cook for 6 to 8 minutes, allowing them to release their moisture and achieve light browning.
06 - Add tomato paste, dried thyme, dried rosemary, and smoked paprika. Cook for 1 minute, stirring constantly to bloom the spices.
07 - Stir in cooked lentils, vegetable broth, frozen peas, and soy sauce. Simmer for 10 to 12 minutes until the mixture thickens and flavors meld. Adjust seasoning with salt and pepper.
08 - Spread the lentil filling evenly in a 9x13-inch baking dish. Spoon mashed potatoes over the filling and spread smoothly across the surface. Create decorative ridges using a fork.
09 - Bake for 25 to 30 minutes until the potato topping is golden brown and the filling is visibly bubbling at the edges.
10 - Allow the pie to cool slightly before serving. Garnish with chopped fresh parsley if desired.

# Expert Advice:

01 -
  • It's genuinely satisfying and comforting without a trace of meat, which even non-vegetarians keep asking for seconds.
  • You can prep everything ahead and bake it right before dinner, making it perfect for feeding a crowd on a busy night.
  • The mushrooms develop this deep, almost savory umami that makes people swear there's something secretly meaty going on.
02 -
  • Don't skip draining the potatoes really well because any excess water will make your mash gluey and defeat the whole purpose of creamy perfection.
  • The filling needs to be hot when you top it with potatoes because cold filling means the potatoes sit in a cool dish and won't bake through properly.
  • Mushrooms release water as they cook, which is actually good for building flavor, but if your filling looks too wet before baking, simmer it uncovered for a few extra minutes.
03 -
  • Use a potato ricer instead of a masher if you want the silkiest possible mash—it makes a real difference in texture and how smoothly it spreads.
  • Save a little of the potato cooking water before you drain because a splash of it can help loosen the mash if it's too thick, without making it watery.
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