In a pan over low-medium heat, heat oil and melt butter. Add garlic and parsley. Simmer for about 10 minutes.
Add and saute onions, bell peppers, carrots, and potatoes in the garlic butter for a few minutes. Add beef and cook until browned.
Mix in tomato paste and liver spread and continue sautéing for a few minutes until toasted.
Pour in tomato sauce and beef broth. Stir until well combined. Season with salt and pepper.
Cut a square sheet of puff pastry into 4 equal pieces. Roll out one piece until about 2 mm thick and rectangular.
Place a bit of filling and grated mozzarella cheese about 1 inch from the top edges of the puff pastry. Fold in half, brush egg wash on sides, and seal the edges. Brush whole pastry with egg wash.
Bake in a pre-heated oven at 180 degrees Celsius for 20-25 minutes.
Servings 0