Beef Cottage Pie with Cheddar Mash

Quick Recipe Version (TL;DR)

• Yield: 6 servings
• Prep Time: 25 minutes
• Cook Time: 50 minutes
• Total Time: 1 hour 15 minutes

Quick Ingredients

• 2 lb (900 g) 85% lean ground beef
• 1 tbsp olive oil
• 1 large onion, 2 medium carrots, 2 celery ribs (all diced)
• 3 garlic cloves (minced)
• 2 tbsp tomato paste; 1 tbsp all-purpose flour
• 2 tbsp Worcestershire sauce; 1 cup (240 ml) beef broth
• 1 tsp fresh thyme leaves (or 1/2 tsp dried); 1 cup (140 g) frozen peas
• 2 lb (900 g) russet potatoes; 4 tbsp (56 g) unsalted butter
• 2/3 cup (160 ml) warm whole milk; 1/4 cup (60 ml) sour cream
• 6 oz (170 g) sharp cheddar, shredded and divided
• 1 large egg yolk (optional); kosher salt and black pepper
• Chopped chives (garnish, optional)

Do This

• 1. Heat oven to 400°F (200°C). Boil potatoes in well-salted water until tender, 15–20 minutes.
• 2. Brown beef in oil over medium-high heat; drain excess fat.
• 3. Add onion, carrot, and celery; cook 6–8 minutes. Stir in garlic 1 minute.
• 4. Add tomato paste and flour; cook 1 minute. Stir in Worcestershire, broth, and thyme; simmer 5–7 minutes to thicken. Fold in peas; season.
• 5. Mash drained potatoes with butter, warm milk, sour cream, 4 oz cheddar, and yolk; season.
• 6. Spread beef in a 3-qt baking dish; top with mash. Rake with a fork; sprinkle remaining cheddar.
• 7. Bake 20–25 minutes until bubbling and golden; broil 1–2 minutes if needed. Rest 10 minutes; garnish and serve.

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Why You’ll Love This Recipe

• Classic comfort: savory beef and vegetables under a rich, sharp-cheddar potato topping.
• Balanced and hearty: plenty of veggies, aromatic thyme, and a Worcestershire-kissed gravy.
• Golden, crisp edges: raked mash bakes up beautifully with cheesy, browned peaks.
• Make-ahead friendly: assemble earlier, then bake when you’re ready to eat.

Grocery List

• Produce: Russet potatoes, onion, carrots, celery, garlic, fresh thyme (or dried), chives (optional)
• Dairy: Unsalted butter, whole milk, sour cream, sharp cheddar, 1 egg
• Pantry: Olive oil, tomato paste, all-purpose flour, Worcestershire sauce, beef broth, kosher salt, black pepper, bay leaf (optional), flaky sea salt (optional)

Full Ingredients

Beef & Vegetable Filling

• 1 tbsp olive oil
• 2 lb (900 g) 85% lean ground beef
• 1 large yellow onion, diced (about 1 1/2 cups / 280 g)
• 2 medium carrots, diced (about 1 cup / 170 g)
• 2 celery ribs, diced (about 3/4 cup / 115 g)
• 3 garlic cloves, minced
• 2 tbsp (30 g) tomato paste
• 1 tbsp (8 g) all-purpose flour
• 2 tbsp (30 ml) Worcestershire sauce
• 1 cup (240 ml) beef broth
• 1 tsp fresh thyme leaves (or 1/2 tsp dried thyme)
• 1 bay leaf (optional; remove before assembling)
• 1 cup (140 g) frozen peas
• 1 1/4 tsp kosher salt
• 1/2 tsp freshly ground black pepper

Cheddar Mash Topping

• 2 lb (900 g) russet potatoes, peeled and cut into 1-inch chunks
• 4 tbsp (56 g) unsalted butter
• 2/3 cup (160 ml) whole milk, warmed
• 1/4 cup (60 ml) sour cream
• 6 oz (170 g) sharp cheddar, coarsely shredded, divided (4 oz/115 g for mash; 2 oz/55 g for topping)
• 1 large egg yolk (optional, for extra color and richness)
• 1 tsp kosher salt
• 1/4 tsp black pepper (or white pepper)

To Finish

• Chopped chives, for garnish (optional)
• Flaky sea salt, to finish (optional)

Step-by-Step Instructions

Step 1: Preheat and set up

Heat the oven to 400°F (200°C). Lightly grease a 3-quart (9×13-inch) baking dish. Put the kettle on or fill a large pot with water for the potatoes.

Step 2: Boil the potatoes

Place the potatoes in a large pot, cover with cold water by 1 inch, and season the water with about 1 tbsp kosher salt. Bring to a boil, then simmer until a knife slips in easily, 15–20 minutes. Drain well, return potatoes to the hot pot, and let steam off excess moisture for 2 minutes.

Step 3: Brown the beef and soften the veg

While the potatoes cook, heat the olive oil in a large skillet or Dutch oven over medium-high heat. Add the ground beef and cook, breaking it into crumbles, until well browned, 6–8 minutes. Drain off excess fat if needed, leaving about 1 tbsp in the pan. Add the onion, carrot, and celery; cook, stirring, until softened and lightly golden, 6–8 minutes. Stir in the garlic and cook 1 minute until fragrant.

Step 4: Build the gravy

Stir in the tomato paste and cook 1 minute to caramelize. Sprinkle over the flour and cook 30–60 seconds, stirring. Add the Worcestershire sauce, beef broth, thyme, and bay leaf (if using). Scrape up any browned bits and bring to a simmer; cook until slightly thickened and glossy, 5–7 minutes. Remove the bay leaf, fold in the peas, and season with 1 1/4 tsp kosher salt and 1/2 tsp black pepper. Take off the heat.

Step 5: Make the cheddar mash

Mash the hot potatoes with the butter until smooth. Pour in the warm milk and sour cream; mash until creamy. Fold in 4 oz (115 g) of the cheddar and the egg yolk (if using). Season with 1 tsp kosher salt and 1/4 tsp pepper. Taste and adjust seasoning.

Step 6: Assemble, rake, and bake

Spread the beef mixture evenly into the prepared baking dish. Dollop the mash on top, then use an offset spatula to seal to the edges and prevent bubbling over. Rake the surface with a fork to create ridges. Sprinkle the remaining 2 oz (55 g) cheddar over the top. Bake until the filling is bubbling around the edges and the peaks are golden, 20–25 minutes. For extra color, broil 1–2 minutes, watching closely.

Step 7: Rest and garnish

Let the cottage pie rest for 10 minutes to set. Finish with a pinch of flaky sea salt and a shower of chopped chives. Serve warm and enjoy those crisp-cheddar edges with the savory beef and veg beneath.

Pro Tips

• Start potatoes in cold, salted water so they cook evenly and season from the inside out.
• Warm milk blends more smoothly into the mash and keeps it velvety.
• Raking the mash with a fork creates peaks that brown and crisp beautifully.
• For a deeper, richer filling, let the beef mixture simmer a few extra minutes to concentrate flavors.
• Use an egg yolk in the mash for a burnished golden top that holds ridges well.

Variations

• Guinness Cottage Pie: Replace 1/2 cup (120 ml) of the beef broth with stout and simmer until the alcohol cooks off and the sauce is glossy.
• Mushroom Boost: Add 8 oz (225 g) chopped cremini mushrooms with the onions for extra savoriness.
• Gluten-Free: Swap the flour for 2 tsp cornstarch mixed with 2 tsp cold water; stir in and simmer to thicken.

Storage & Make-Ahead

Refrigerate leftovers tightly covered for up to 4 days; reheat, covered, at 350°F (175°C) for 20–25 minutes, then uncover to re-crisp. Assemble unbaked up to 24 hours ahead, cover, and refrigerate; add 5–10 minutes to the bake time. To freeze, assemble in a freezer-safe dish, wrap well, and freeze up to 3 months. Bake from frozen at 375°F (190°C) covered for 45–55 minutes, then uncover 10–15 minutes to brown. Let rest 10 minutes before serving.

Nutrition (per serving)

Approximate: 700 calories; 35 g protein; 44 g fat; 38 g carbohydrates; 3 g fiber; 1,050 mg sodium. Values will vary based on brands and optional ingredients.