Instructions:
Step 1
Mix mashed potatoes, melted butter, milk, beaten egg, and salt in a bowl.
Step 2
Slowly incorporate flour until a soft dough is formed.
Step 3
Sauté onion until translucent, then add carrot and cook until golden. Set aside.
Step 4
Cook mushrooms until golden brown. Season with salt and garlic.
Step 5
Preheat oven to 180°C (356°F) and line a baking dish with parchment paper.
Step 6
Spread potato dough in the dish.
Step 7
Layer with half of the mushrooms, then onion-carrot mixture, and remaining mushrooms.
Step 8
Wrap the dish with foil and bake it for 30 minutes.
Step 9
Remove foil, sprinkle cheese on top, and bake for 7-10 minutes until golden.
Step 10
Sprinkle chopped dill over the cake.
Step 11
Slice and serve hot. Enjoy!