Peel and cook the potatoes. After boiling, let them cook for about 10 minutes and check for tenderness with a fork.

Mash the potatoes using a press or masher.

Add the melted butter and milk, mix well, and stir in the sour cream.

Season with nutmeg, salt, and pepper to taste.

Brown the ground beef over high heat.

Add the finely chopped onion, diced carrots, diced celery, and sliced mushrooms. Cook over medium heat for 5-7 minutes until softened.

Add the minced garlic, tomato paste, salt, pepper, and turmeric and mix well.

Add the peas and let the mixture simmer for another 3-4 minutes.

Spoon the filling evenly into a baking dish.

Cover with the mashed potatoes, spread the surface smooth, and sprinkle with the grated cheese.

Preheat the oven to 200°C.

Bake for 20-25 minutes, until the cheese is melted and golden brown.

Enjoy this super delicious Cottage Pie. It's the perfect comfort food for a chilly evening.