Easy Shepherd's Pie with Creamy Mash and Savory Beef - Cook with Carla

Ingredients

• 800 g ground beef
• 2 carrots, diced
• 2 sticks of celery, diced
• 1 large onion, diced
• 1 tablespoon pork lard or olive oil
• Salt and pepper to taste
• 2 tablespoons tomato paste
• Oregano to taste
• Garlic powder to taste
• 1 teaspoon flour
• 3 tablespoons Worcestershire sauce
• 4 large potatoes, peeled and diced
• 2 tablespoons butter
• ½ cup milk or heavy cream
• Grated Parmesan (optional)
• Ricotta cheese (optional)