Cottage Pie with Gruyère Mashed Potatoes

Cottage pie with Gruyère mashed potatoes keeps things classic but adds a garlicky, cheesy upgrade. Lean ground beef is browned until deeply flavorful, then layered with a creamy Gruyère mash that bakes golden and crisp around the edges. A hearty, beef-forward comfort dinner that holds its shape and reheats well.

Course Comfort Food, Dinner, Main Course

Cuisine American-Comfort

Keyword baked beef dinner, beef cottage pie, cheesy cottage pie, comfort food recipe, cottage pie, Gruyère mashed potatoes, sheperd's pie alternative

Prep Time 40

Cook Time 30

Resting 30

Total Time 1 40

Servings

Calories 495kcal

Author Cathy Pollak

Equipment

baking dish 9x13 (33x23). Holds everything without spillover.
large skillet For browning the ground beef evenly.
potato masher For a smooth, but textured mash.

Ingredients

Cottage Pie:

2 tbsps (30 ml) olive oil
1 medium yellow onion diced
3 medium carrots peeled and diced
3 ribs celery diced
2 lbs (980 g) lean ground beef (at least 90/10)
6 cloves garlic minced
1 tsp (2 g) dried oregano leaves
1 tsp (2 g) dried thyme leaves
1 tsp (6 g) table salt
½ tsp (2 g) black pepper
2 tbsps (30 ml) Worcestershire sauce
2 tbsps (33 g) tomato paste
3 tbsps (24 g) all-purpose flour
1 cup (240 ml) low-sodium beef broth
¾ cup (100 g) frozen peas
2 tbsps (8 g) freshly chopped parsley

Potatoes:

4 lbs (1.8 kg) Russet potatoes peeled and cut into 1-inch (2.5 cm) cubes
4 cloves garlic peeled and crushed
4 tbsps (56 g) butter melted
1 cup (240 ml) whole milk slightly warmed
salt and pepper to taste
1¼ cups (145 g) Gruyère cheese divided

Instructions

Preheat the oven to 375°F (190°C).
Heat the olive oil in a large, deep skillet over medium-high heat. Add the onion, carrots, and celery and cook until softened and lightly golden, about 10 minutes.
2 tbsps (30 ml) olive oil, 1 medium yellow onion, 3 medium carrots, 3 ribs celery
Add the ground beef and let it brown deeply. Resist the urge to stir too often; letting the meat sit for a minute or two at a time develops that flavor that makes a real difference in the final cottage pie. Continue cooking until no pink remains.
2 lbs (980 g) lean ground beef (at least 90/10)
Add the garlic and cook for another 3 minutes until fragrant. Stir in the oregano, thyme, salt, pepper, Worcestershire sauce, and tomato paste until everything is evenly coated.
6 cloves garlic, 1 tsp (2 g) dried oregano leaves, 1 tsp (2 g) dried thyme leaves, 1 tsp (6 g) table salt, ½ tsp (2 g) black pepper, 2 tbsps (30 ml) Worcestershire sauce, 2 tbsps (33 g) tomato paste
Sprinkle the flour over the mixture and cook for 3 minutes, stirring as it absorbs into the beef and vegetables. Slowly pour in the beef broth while stirring to create a smooth, thickened sauce. Add the peas and chopped parsley, then let the filling simmer for 5 minutes. Turn off the heat.
3 tbsps (24 g) all-purpose flour, 1 cup (240 ml) low-sodium beef broth, ¾ cup (100 g) frozen peas, 2 tbsps (8 g) freshly chopped parsley
Add the potatoes and garlic to a large pot and cover with salted water. This step can be done while the beef filling is cooking. Boil, covered, for about 25 minutes, until fork-tender. Drain well.
4 lbs (1.8 kg) Russet potatoes, 4 cloves garlic
Mash the potatoes and garlic while still hot. Add the butter and milk, both warmed, and mash until smooth. Season with salt and pepper to taste. Stir in 1 cup (115 g) of the grated Gruyère; it will melt into the mash and turn it creamy and rich.
4 tbsps (56 g) butter, 1 cup (240 ml) whole milk, salt and pepper , 1¼ cups (145 g) Gruyère cheese
Spread the beef filling evenly into a 13x9-inch (33x23 cm) baking dish. Spoon the mashed potatoes over the filling, smoothing them to the edges. Sprinkle the remaining Gruyère across the top.
Bake uncovered for about 25 minutes, until the cottage pie is bubbling and the topping is beginning to brown. If you want a crispier top, place it under the broiler for 2 minutes until golden and lightly blistered.
Let the cottage pie rest for 20 to 30 minutes before serving so the layers set and slice cleanly.

Notes

Let the filling cool slightly before topping so the layers stay defined.
Rest the cottage pie before slicing to avoid a runny interior.
Gruyère melts evenly and gives the potatoes a nutty, alpine flavor.
Warm butter and milk create a smoother mash and help the cheese blend in.
Brown the beef thoroughly before adding liquid to build flavor depth.
A baking sheet under the dish catches overflow during baking.

If you’re making this cottage pie with Gruyère mashed potatoes, check out the full post. That’s where I keep extra tips, FAQs, and details that don’t always make it into the recipe card

Nutrition info is an estimate and will vary depending on the brands you use.

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