Budget Lentil Shepherd's Pie (Under $10, Vegetarian)
Classic comfort food, zero meat, under $10 — done in under an hour.
It's been a long day and you want something warm, filling, and genuinely satisfying — not a sad salad. This lentil shepherd's pie delivers everything the classic does: savory, saucy filling topped with fluffy mashed potatoes, all baked until golden. Lentils are one of the cheapest proteins on earth, and they soak up flavor beautifully. The whole thing comes together in about 55 minutes with mostly pantry staples. Expect a generous, stick-to-your-ribs dinner that reheats even better the next day.
Ingredients
- 1 cup dried green or brown lentils — rinsed
- 2.5 cup water or vegetable broth
- 1.5 lb russet potatoes — peeled and cut into 1-inch chunks
- 3 tbsp butter — or olive oil for vegan
- 0.25 cup milk — or unsweetened plant milk
- 1 unit medium yellow onion — diced
- 2 unit medium carrots — diced
- 2 unit celery stalks — diced
- 3 unit garlic cloves — minced
- 2 tbsp tomato paste
- 1 tbsp soy sauce — adds savory depth
- 1 tsp dried thyme
- 1 tsp smoked paprika
- 1 cup frozen peas
- 1 tbsp olive oil
- 1 tsp salt — divided, plus more to taste
- 0.5 tsp black pepper — divided
Method
- 1 Preheat your oven to 400°F. Add the rinsed lentils and water or broth to a medium saucepan. Bring to a boil, then reduce heat and simmer uncovered for 20–22 minutes, until lentils are tender but not mushy. Drain any excess liquid and set aside.
- 2 While the lentils cook, place the potato chunks in a separate pot and cover with cold salted water. Bring to a boil and cook for 12–15 minutes until fork-tender.
- 3 Meanwhile, heat olive oil in a large oven-safe skillet over medium heat. Add the onion, carrots, and celery with a pinch of salt. Cook, stirring occasionally, for 6–7 minutes until softened.
- 4 Add the garlic, tomato paste, thyme, and smoked paprika to the skillet. Stir and cook for 1–2 minutes until fragrant and the tomato paste darkens slightly.
- 5 Add the cooked lentils, soy sauce, frozen peas, ½ tsp salt, and ¼ tsp black pepper to the skillet. Stir everything together and cook for 2 minutes. Taste and adjust seasoning. Remove from heat.
- 6 Drain the potatoes and return them to the pot. Add butter, milk, remaining ½ tsp salt, and ¼ tsp black pepper. Mash until smooth and creamy. Taste and adjust seasoning.
- 7 Spoon the mashed potatoes over the lentil filling in the skillet and spread into an even layer with a spatula. Use a fork to create ridges on top — these will get golden and crispy in the oven.
- 8 Bake at 400°F for 15–18 minutes until the top is lightly golden. For extra color, broil for the last 2–3 minutes, watching closely. Let rest 5 minutes before serving.
Variations
- Vegan Version — Use olive oil instead of butter and unsweetened oat or almond milk in the mashed potatoes. The rest of the recipe is already vegan.
- Faster Stovetop Version — Skip the oven entirely — just pile the mashed potatoes on top of the lentil filling in the skillet, cover with a lid, and heat on low for 5 minutes. You lose the golden crust but cut the time by 20 minutes.
- Add Mushrooms — Dice 6 oz of cremini mushrooms and cook them with the onion and carrots for extra meaty texture and umami depth — still well under $10 total.
Notes
If you don't have an oven-safe skillet, transfer the lentil filling to a greased 9x13-inch baking dish before topping with mashed potatoes. Lentils vary — green hold their shape best here; red lentils will cook faster (about 12 minutes) but get mushier, which still works. The soy sauce is the secret to that savory, meaty depth — don't skip it.
Equipment that helps
- Oven-safe skillet (10–12 inch) — Lets you build the filling and bake the whole dish in one pan, cutting down on cleanup.
- Potato masher — Gets the potatoes smooth and fluffy faster than a fork without overworking them.
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