Caramelized Onion & Lentil Shepherd’s Pie with Garlic Mashed Potatoes

This protein-packed, stovetop shepherd’s pie swaps traditional meat for hearty lentils and caramelized onions, all topped with creamy garlic mashed potatoes. It’s a quick, comforting meal ready in just 30 minutes—perfect for busy weeknights and high-protein diets.

⏱️ 30 minutes
👥 4 servings
🔥 390 calories
Caramelized Onion & Lentil Shepherd’s Pie with Garlic Mashed Potatoes
Ingredients
  • 2 cups brown or green lentils, cooked and drained
  • 1 large yellow onion, thinly sliced
  • 1 medium carrot, diced
  • 1 medium celery stalk, diced
  • 4 cloves garlic cloves, minced
  • 2 tbsp olive oil
  • 1 cup vegetable broth
  • 2 tbsp tomato paste
  • 1 tbsp soy sauce or tamari
  • 1 tsp dried thyme
  • 3 medium russet potatoes, peeled and cubed
  • 0.5 cup unsweetened soy milk (or other plant milk)
  • 2 tbsp vegan butter
  • 1 tsp salt
  • 0.5 tsp black pepper
  • 2 tbsp fresh parsley, chopped (optional)
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Instructions

1

Place potatoes in a pot, cover with water, and bring to a boil. Cook until tender, about 12 minutes.

⏱️ 12 minutes
2

While potatoes cook, heat olive oil in a large skillet over medium heat. Add sliced onion and cook, stirring occasionally, until deeply golden and caramelized, about 8 minutes.

⏱️ 8 minutes 🌡️ medium
3

Add diced carrot, celery, and half the minced garlic to the onions. Sauté for 3 minutes until softened.

⏱️ 3 minutes 🌡️ medium
4

Stir in tomato paste, lentils, soy sauce, thyme, salt, pepper, and vegetable broth. Simmer for 5 minutes until slightly thickened.

⏱️ 5 minutes 🌡️ medium
5

Drain cooked potatoes and mash with warmed soy milk, vegan butter, remaining garlic, and a pinch of salt and pepper until creamy.

⏱️ 3 minutes
6

Spread the lentil mixture evenly in the skillet. Top with mashed potatoes, spreading to cover. Sprinkle with parsley if desired and serve hot.

⏱️ 1 minute
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Nutrition Information

390
Calories
22g
Protein
58g
Carbs
8g
Fat

Per serving. Values are approximate and may vary.

Frequently Asked Questions

Yes, you can prepare the lentil filling and mashed potatoes in advance and store them separately or assembled. Reheat on the stovetop before serving.

Absolutely! Freeze in a freezer-safe dish for up to 2 months. Thaw overnight in the fridge and reheat on the stovetop or in the oven until hot.

Feel free to add peas, corn, or diced bell pepper to the filling for extra flavor and nutrients.

Yes, as long as you use tamari instead of soy sauce, this recipe is naturally gluten-free.

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