Easy Healthy Sweet Potato Cottage Pie
A lighter twist on the classic cottage pie: savory lean mince (or lentils) topped with a creamy sweet potato mash for extra vitamins, fiber and a naturally sweet finish. Prep 15 mins • Cook 35 mins • Total 50 mins.
Ingredients
- 1.2 lb (550 g) sweet potatoes, peeled and chopped
- 1–2 tbsp olive oil
- 1 lb (450 g) lean minced beef or turkey (or 1½ cups cooked brown lentils for vegetarian)
- 1 onion, finely chopped
- 2 carrots, diced (plus extra grated for sweetness if liked)
- 2 celery sticks, diced
- 2 garlic cloves, minced
- 1 tbsp tomato paste
- 1 cup (240 ml) beef or vegetable stock
- 1 tbsp Worcestershire sauce or tamari
- 1 tsp chopped fresh thyme (or ½ tsp dried) and ½ tsp chopped rosemary
- Splash of milk or 3 tbsp Greek yogurt for the mash
- Salt and black pepper to taste
Equipment
- Large saucepan for boiling
- Frying pan or skillet
- Baking dish or cast-iron skillet
- Masher or fork
- Wooden spoon and spatula
Instructions
- Boil and mash: Place sweet potatoes in salted water and boil until very tender (about 12–15 minutes). Drain, then mash with a splash of milk or Greek yogurt, season with salt and pepper and set aside.
- Sauté aromatics & brown mince: Heat olive oil in a large frying pan. Sauté onion, carrot and celery until softened. Add garlic, then add the minced beef/turkey (or cooked lentils) and brown. Stir in tomato paste, thyme and rosemary.
- Simmer filling: Pour in stock and Worcestershire or tamari. Simmer gently until the filling thickens (about 8–10 minutes). Adjust seasoning—add a splash of soy or balsamic for extra depth if needed.
- Assemble & bake: Transfer the filling to a baking dish or cast-iron skillet. Spoon the sweet potato mash over the top, score lightly with a fork or spatula, brush with a little olive oil or milk. Bake at 400°F (200°C) for 15–20 minutes until the top is golden. For a crisp finish, broil briefly watching closely.
- Rest & serve: Allow to rest 5 minutes before serving. Garnish with fresh thyme if desired.
Nutrition estimate (per serving)
Approximate values for 6 servings using lean mince: 320 kcal • 22 g protein • 28 g carbs • 12 g fat • 5 g fiber. Values will vary with protein choice and portion size.
- Use lean mince or lentils to cut calories and boost fiber.
- Add a handful of grated carrot to the filling for natural sweetness and extra veg.
- Make ahead: assemble and freeze for up to 3 months (see FAQ for reheating).
- For a crisp top, briefly broil after baking—watch carefully so it doesn’t burn.
Serving ideas
Serve your sweet potato cottage pie with steamed greens, buttery peas, or a crisp salad. A spoonful of chutney on the side brightens the dish. Perfect for family dinners or portioning into meal-prep containers.
FAQ
Can I use regular potatoes instead of sweet potatoes? Yes — regular potatoes work fine but increase the dish’s carbohydrate content and lower the vitamin A. Sweet potatoes add fiber and natural sweetness.
How long can I freeze the pie? Freeze fully assembled pies for up to 3 months. Thaw overnight in the fridge and reheat in a 350°F (175°C) oven until hot.
How do I make this vegan? Substitute cooked brown or green lentils for the meat and use vegetable stock and dairy-free yogurt or plant milk in the mash.
Reheating instructions? Reheat single portions in the microwave for 2–3 minutes or in the oven at 350°F (175°C) for 15–20 minutes until piping hot.
Looking for more ideas? Browse our recipe collection at MadeForRecipes Recipes or see technique notes on BBC Good Food.