Ingredients
Method
How to Make Potatoes:
- Boil – Place chopped potatoes in a large saucepan, cover with cold water, and bring to a boil. Cook until potatoes are tender (12-15 minutes); don’t overcook potatoes. Drain and mash potatoes in the same pot.
- Add warm cream and 1/2 tsp salt (or to taste), then mash until smooth. Lastly, mash in the Parmesan cheese and beaten egg.
How to Make Shepherd's Pie
- Sauté Beef – Preheat oven to 400˚F with a rack in the center. Heat a large skillet over medium heat. Add 1 Tbsp olive oil and ground beef. Break up the beef with a spatula, then season with 1 tsp salt and 1/2 tsp black pepper, and cook until the meat is just cooked through and no longer pink (5 minutes).
- Add aromatics – add onion and sauté for 3 minutes to soften, then add minced garlic and stir another minute. Sprinkle with 2 Tbsp flour and stir for 1 minute. You’ll see a film form at the bottom of your pan (*see notes if using cornstarch)
- Pour in wine, scraping the bottom to deglaze the pan for a minute. Add beef broth, 1 Tbsp tomato paste, and 1 Tbsp Worcestershire.
- Add 1 1/2 cups of frozen veggies and bring to a light boil. Season with another 1/2 tsp salt and 1/4 tsp pepper or add to taste. Reduce the heat to a simmer, cover, and cook 10 minutes until the sauce is slightly thickened.
- Assemble – Transfer meat and veggie mixture to a deep pie dish, or 11×7 or 9×9 casserole dish. Scoop mashed potatoes over the top, then spread evenly, making sure to seal the potatoes to the edge of the dish so the filling doesn’t bubble up. Drizzle 2 Tbsp melted butter over the top.
- Bake – Place a sheet of foil under the casserole to catch any drips and bake at 400˚F on the center rack for 25-30 minutes or until potatoes start to turn golden. Cool 15 minutes before serving.
Notes
*To Use Leftover Mashed Potatoes – Use 4 cups of leftover mashed potatoes, mixed with Parmesan cheese and egg to make your topping.
*To Substitute flour – if you want a gluten-free version, skip the flour step and whisk 1 Tbsp cornstarch into the beef broth until smooth, then add to the skillet.
Make Ahead and Storage:
- Make ahead – assemble the pie, cool, and cover within 2 hours. Refrigerate or freeze for 4 days or until ready to bake.
- To Refrigerate: Cool leftovers at room temperature. Cover and refrigerate within 2 hours. Chill for up to 4 days.
- Freezing: Once the assembled pie is cooled, cover with foil and freeze for up to 2 months. Thaw in the refrigerator overnight before baking.
- To Reheat: Bake a refrigerated or fully thawed pie at 400˚F for 30-35 minutes until 165°F.