Baked Shepherd's Pie with Garlic-Infused Mashed Potatoes

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A comforting layered dish featuring savory ground beef and vegetables topped with creamy garlic mashed potatoes, baked until golden and bubbling. This british-inspired beef ready in about 65 minutes pairs ground beef, medium, diced onion, medium, diced carrot for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 450 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart.

Prep: 20 min Cook: 45 min Serves 6 British cuisine 450 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F. Peel and quarter 3 large russet potatoes (about 2 lbs). Place them in a large pot, cover with cold water, add 1/2 tsp salt, and bring to a boil. Cook for 15-20 minutes until tender when pierced with a fork.
  2. Step 2: While potatoes cook, heat 1 tbsp olive oil in a large skillet over medium-high heat. Add 1 medium diced onion and 2 diced carrots; sauté for 5 minutes until softened. Add 1 lb ground beef and cook for 6-8 minutes, breaking up meat, until browned and cooked through.
  3. Step 3: Stir in 2 tbsp tomato paste, 1 cup frozen peas, 1 cup beef broth, and 1 tbsp Worcestershire sauce. Season with 1/2 tsp salt and 1/4 tsp black pepper. Simmer for 8-10 minutes until mixture thickens slightly.
  4. Step 4: Drain cooked potatoes and return to pot. Add 4 tbsp butter, 4 minced garlic cloves, 1/2 cup milk, and remaining 1/2 tsp salt and 1/4 tsp black pepper. Mash until smooth and creamy with garlic flavor.
  5. Step 5: Transfer meat mixture to a 9x9-inch baking dish, spreading evenly. Spoon mashed potatoes over the top and spread gently with a spatula to cover completely.
  6. Step 6: Bake uncovered for 20-25 minutes until the edges are bubbling and mashed potatoes develop a light golden crust. Let cool for 5 minutes before serving.

Frequently asked questions

How long does Baked Shepherd's Pie with Garlic-Infused Mashed Potatoes take to make?

Total time is about 65 minutes (20 min prep + 45 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Baked Shepherd's Pie with Garlic-Infused Mashed Potatoes?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep ground beef from drying out.

Can I substitute ingredients in Baked Shepherd's Pie with Garlic-Infused Mashed Potatoes?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Baked Shepherd's Pie with Garlic-Infused Mashed Potatoes for a different number of people?

The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Baked Shepherd's Pie with Garlic-Infused Mashed Potatoes?

British beef like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.