Ingredients:
- 2 lbs Ground Beef (85/15 recommended)
- 1 large Yellow Onion, finely diced
- 2 medium Carrots, finely diced
- 2 Celery Stalks, finely diced
- 3 cloves Garlic, minced
- 2 Tbsp All-Purpose Flour
- 1/2 cup Dry Red Wine (optional)
- 2 cups Beef Broth (low sodium)
- 2 Tbsp Tomato Paste
- 1 Tbsp Worcestershire Sauce
- 1 tsp Fresh Thyme Leaves
- 1 cup Frozen Peas
- 2 Tbsp Olive Oil
- Salt and Black Pepper to taste
- 3 lbs Russet Potatoes, peeled and quartered
- 6 Tbsp Unsalted Butter, cold and cubed
- 1/2 cup Whole Milk or Cream, warmed
- 1/2 cup Parmesan Cheese, finely grated
- White Pepper to taste
Instructions:
- Boil potatoes in salted water until fork-tender (approx. 15-20 mins). Drain thoroughly while preparing the filling.
- Mash the drained potatoes well. Incorporate cold butter cubes, then slowly stream in warm milk/cream, mixing until smooth. Stir in grated Parmesan, salt, and white pepper. Set aside.
- Heat olive oil in a large, heavy-bottomed skillet over medium-high heat. Sauté onions, carrots, and celery until softened (about 8 minutes). Add garlic and cook for 1 minute more until fragrant.
- Add the ground beef, breaking it up, and cook until fully browned. Drain off any excess fat if necessary.
- Stir in tomato paste and cook for 1 minute. Sprinkle flour over the meat mixture and stir constantly for 1 minute to cook out the raw flour taste.
- Pour in the red wine (if using) and scrape up any browned bits from the bottom of the pan. Let it reduce by half (2 minutes).
- Add beef broth, Worcestershire sauce, and thyme. Bring to a simmer. Reduce heat to low, cover partially, and let the mixture gently bubble for 20 minutes, allowing the sauce to thicken. Stir in frozen peas during the last 5 minutes.
- Preheat the oven to 400°F (200°C). Transfer the beef filling to an oven-safe baking dish if your skillet is not suitable.
- Spoon the Parmesan mash evenly over the filling, ensuring the edges are sealed. Use a fork to create decorative ridges across the top.
- Bake for 20-25 minutes, or until the filling is bubbling vigorously and the topping is golden brown. If needed, grill (broil) for the last 3 minutes for extra colour.
- Allow the pie to rest for 10 minutes before serving to ensure the filling sets properly.